subject:(gas separation)

1. Zarca Lago, Raúl. Design and optimization of propylene purification processes using high performance PVDF-HFP/BMImBF4/AgBF4 membranes: Diseño y optimización de procesos de purificación de propileno mediante membranas de alto rendimiento PVDF-HFP/BMImBF4/AgBF4.

Degree: 2018, Universidad de Cantabria

URL: http://hdl.handle.net/10902/17055

► RESUMEN: Resumen El propileno es el segundo producto químico con mayor volumen de producción a nivel mundial, principalmente debido a la producción de resinas de… (more)

Subjects/Keywords: Gas separation

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APA (6^th Edition):

Zarca Lago, R. (2018). Design and optimization of propylene purification processes using high performance PVDF-HFP/BMImBF4/AgBF4 membranes: Diseño y optimización de procesos de purificación de propileno mediante membranas de alto rendimiento PVDF-HFP/BMImBF4/AgBF4. (Doctoral Dissertation). Universidad de Cantabria. Retrieved from http://hdl.handle.net/10902/17055

Chicago Manual of Style (16^th Edition):

Zarca Lago, Raúl. “Design and optimization of propylene purification processes using high performance PVDF-HFP/BMImBF4/AgBF4 membranes: Diseño y optimización de procesos de purificación de propileno mediante membranas de alto rendimiento PVDF-HFP/BMImBF4/AgBF4.” 2018. Doctoral Dissertation, Universidad de Cantabria. Accessed March 04, 2021. http://hdl.handle.net/10902/17055.

MLA Handbook (7^th Edition):

Zarca Lago, Raúl. “Design and optimization of propylene purification processes using high performance PVDF-HFP/BMImBF4/AgBF4 membranes: Diseño y optimización de procesos de purificación de propileno mediante membranas de alto rendimiento PVDF-HFP/BMImBF4/AgBF4.” 2018. Web. 04 Mar 2021.

Vancouver:

Zarca Lago R. Design and optimization of propylene purification processes using high performance PVDF-HFP/BMImBF4/AgBF4 membranes: Diseño y optimización de procesos de purificación de propileno mediante membranas de alto rendimiento PVDF-HFP/BMImBF4/AgBF4. [Internet] [Doctoral dissertation]. Universidad de Cantabria; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10902/17055.

Council of Science Editors:

Zarca Lago R. Design and optimization of propylene purification processes using high performance PVDF-HFP/BMImBF4/AgBF4 membranes: Diseño y optimización de procesos de purificación de propileno mediante membranas de alto rendimiento PVDF-HFP/BMImBF4/AgBF4. [Doctoral Dissertation]. Universidad de Cantabria; 2018. Available from: http://hdl.handle.net/10902/17055

Georgia Tech

2. Kwon, Yeon Hye. SAPO-34 zeolite membranes for krypton/xenon separation.

Degree: PhD, Chemical and Biomolecular Engineering, 2018, Georgia Tech

URL: http://hdl.handle.net/1853/62221

► The overall focus of this thesis is to develop and understand zeolitic membranes that can separate mixtures of radioisotope krypton-85 and xenon released as off-gases… (more)

Subjects/Keywords: Gas separation; Membranes

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APA (6^th Edition):

Kwon, Y. H. (2018). SAPO-34 zeolite membranes for krypton/xenon separation. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/62221

Chicago Manual of Style (16^th Edition):

Kwon, Yeon Hye. “SAPO-34 zeolite membranes for krypton/xenon separation.” 2018. Doctoral Dissertation, Georgia Tech. Accessed March 04, 2021. http://hdl.handle.net/1853/62221.

MLA Handbook (7^th Edition):

Kwon, Yeon Hye. “SAPO-34 zeolite membranes for krypton/xenon separation.” 2018. Web. 04 Mar 2021.

Vancouver:

Kwon YH. SAPO-34 zeolite membranes for krypton/xenon separation. [Internet] [Doctoral dissertation]. Georgia Tech; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1853/62221.

Council of Science Editors:

Kwon YH. SAPO-34 zeolite membranes for krypton/xenon separation. [Doctoral Dissertation]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/62221

University of Alberta

3. Shafie, Amir Hossein. Gas Separation Membranes Using Cementitious-Zeolite Composite.

Degree: MS, Department of Chemical and Materials Engineering, 2011, University of Alberta

URL: https://era.library.ualberta.ca/files/5q47rp173

► Natural zeolite-based membranes have recently shown promise in the separation of H2 from CO2 and hydrocarbons. However, these highly dense, naturally monolithic materials can suffer… (more)

Subjects/Keywords: gas separation; natural zeolite; membrane

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APA (6^th Edition):

Shafie, A. H. (2011). Gas Separation Membranes Using Cementitious-Zeolite Composite. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/5q47rp173

Chicago Manual of Style (16^th Edition):

Shafie, Amir Hossein. “Gas Separation Membranes Using Cementitious-Zeolite Composite.” 2011. Masters Thesis, University of Alberta. Accessed March 04, 2021. https://era.library.ualberta.ca/files/5q47rp173.

MLA Handbook (7^th Edition):

Shafie, Amir Hossein. “Gas Separation Membranes Using Cementitious-Zeolite Composite.” 2011. Web. 04 Mar 2021.

Vancouver:

Shafie AH. Gas Separation Membranes Using Cementitious-Zeolite Composite. [Internet] [Masters thesis]. University of Alberta; 2011. [cited 2021 Mar 04]. Available from: https://era.library.ualberta.ca/files/5q47rp173.

Council of Science Editors:

Shafie AH. Gas Separation Membranes Using Cementitious-Zeolite Composite. [Masters Thesis]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/5q47rp173

Texas A&M University

4. Hsu, Yu-Chen. Molecular Sieve Zeolitic-Imidazolate Framework ZIF-90 Thin Films and Membranes for Gas Separation Applications.

Degree: MS, Chemical Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/173519

► Hydrocarbon separation in the industry is challenging and currently achieved by well-established relative energy intensive and multi-column distillation processes. Even if many promising membrane-based separation… (more)

Subjects/Keywords: ZIFs; Gas separation; Membranes

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APA (6^th Edition):

Hsu, Y. (2018). Molecular Sieve Zeolitic-Imidazolate Framework ZIF-90 Thin Films and Membranes for Gas Separation Applications. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173519

Chicago Manual of Style (16^th Edition):

Hsu, Yu-Chen. “Molecular Sieve Zeolitic-Imidazolate Framework ZIF-90 Thin Films and Membranes for Gas Separation Applications.” 2018. Masters Thesis, Texas A&M University. Accessed March 04, 2021. http://hdl.handle.net/1969.1/173519.

MLA Handbook (7^th Edition):

Hsu, Yu-Chen. “Molecular Sieve Zeolitic-Imidazolate Framework ZIF-90 Thin Films and Membranes for Gas Separation Applications.” 2018. Web. 04 Mar 2021.

Vancouver:

Hsu Y. Molecular Sieve Zeolitic-Imidazolate Framework ZIF-90 Thin Films and Membranes for Gas Separation Applications. [Internet] [Masters thesis]. Texas A&M University; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969.1/173519.

Council of Science Editors:

Hsu Y. Molecular Sieve Zeolitic-Imidazolate Framework ZIF-90 Thin Films and Membranes for Gas Separation Applications. [Masters Thesis]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/173519

Virginia Tech

5. Liu, Ran. Synthesis and Characterization of Novel Polybenzimidazoles and Post-modifications for Membrane Separation Applications.

Degree: PhD, Macromolecular Science and Engineering, 2018, Virginia Tech

URL: http://hdl.handle.net/10919/96200

► Polybenzimidazoles, a class of aromatic heterocyclic polymers, are well known due to their remarkable thermal stability, mechanical properties and chemical resistance which are often required… (more)

▼ Polybenzimidazoles, a class of aromatic heterocyclic polymers, are well known due to their remarkable thermal stability, mechanical properties and chemical resistance which are often required in extreme operation conditions. Because of these properties, polybenzimidazoles are excellent candidates in various application areas including proton exchange membrane fuel cells, gas separation membranes, reverse osmosis and nanofiltration, and high performance coatings. The following studies are focused on the synthesis, characterization and related properties of polybenzimidazoles and polybenzimidazole based materials. A novel sulfonyl-containing tetraamino-substituted monomer (3,3',4,4'-tetraaminodiphenylsulfone) was synthesized and polymerized with three different diacid monomers to make polybenzimidazoles. The new monomer synthesis route with reduced steps relative to the existing literature method increased the overall yield by a factor of three. The sulfonyl-containing polybenzimidazoles have enhanced solubilities in common organic solvents including dimthylsulfoxide, dimethylacetamide and N-methyl-2-pyrrolidone in comparison with the commercial polybenzimidazole, Celazole ®, poly(2,2'-(m-phenylene)-5,5'-bibenzimidazole). The improvements in solubility are attributed to the introduction of polar sulfonyl linking moiety in the monomer. Remarkable thermal stabilities (high Tg, > 428 °C) were demonstrated through Dynamic Mechanical Analysis (DMA) and Thermogravimetric Analysis (TGA). A well designed film casting process was investigated and established. Polybenzimidazoles were fabricated into transparent thin films (20-30 μm thick) for gas transport measurements. These novel polybenzimidazole films exhibited extraordinary gas separation properties, especially for H2/CO2 separation. There is a trade-off relationship between gas permeability and selectivity through dense, non-porous polymer membranes that was discovered by Robeson in 1991. The ultimate goal for developing gas separation membranes is to improve both permeability and selectivity simultaneously. Gas permeability is related to the free volume between polymer chains. In order to improve gas permeability, we hypothesized a concept that increasing free volume could be achieved by thermally degrading sacrificial components and volatilizing their byproducts from a glassy matrix. Volatile components were introduced into the films to preoccupy the spaces between polymer chains. Once they were degraded and removed through the thermal treatment, it was hypothesized that the preoccupied spaces would remain empty due to the glassy nature of the matrix at the heat treatment temperature, thus resulting in more free volume. Two post- modification strategies including grafting and blending were utilized to incorporate the volatile components, poly(propylene oxide) and poly(ethylene oxide). Post-modified polybenzimidazole films impressively showed significant enhancements in both gas permeability and selectivity for H2/CO2 separation. The H2 permeability of the… Advisors/Committee Members: Riffle, Judy S. (committeechair), Lesko, John J. (committee member), Liu, Guoliang (committee member), Turner, S. Richard (committee member), Davis, Richey M. (committee member).

Subjects/Keywords: polybenzimidazole; gas separation; membrane

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APA (6^th Edition):

Liu, R. (2018). Synthesis and Characterization of Novel Polybenzimidazoles and Post-modifications for Membrane Separation Applications. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/96200

Chicago Manual of Style (16^th Edition):

Liu, Ran. “Synthesis and Characterization of Novel Polybenzimidazoles and Post-modifications for Membrane Separation Applications.” 2018. Doctoral Dissertation, Virginia Tech. Accessed March 04, 2021. http://hdl.handle.net/10919/96200.

MLA Handbook (7^th Edition):

Liu, Ran. “Synthesis and Characterization of Novel Polybenzimidazoles and Post-modifications for Membrane Separation Applications.” 2018. Web. 04 Mar 2021.

Vancouver:

Liu R. Synthesis and Characterization of Novel Polybenzimidazoles and Post-modifications for Membrane Separation Applications. [Internet] [Doctoral dissertation]. Virginia Tech; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10919/96200.

Council of Science Editors:

Liu R. Synthesis and Characterization of Novel Polybenzimidazoles and Post-modifications for Membrane Separation Applications. [Doctoral Dissertation]. Virginia Tech; 2018. Available from: http://hdl.handle.net/10919/96200

University of Notre Dame

6. Ashish Kushwaha. Development of Polybenzoxazole (PBO)-Based Polymer Membranes for Gas Separation</h1>.

Degree: Chemical and Biomolecular Engineering, 2017, University of Notre Dame

URL: https://curate.nd.edu/show/cj82k645m42

► Polybenzoxazoles (PBOs) are highly attractive membrane materials because of their superior gas separation parameters (high permeability and high selectivity) and excellent mechanical and thermal… (more)

▼ Polybenzoxazoles (PBOs) are highly attractive membrane materials because of their superior gas separation parameters (high permeability and high selectivity) and excellent mechanical and thermal stability. However, the practical application of PBO-based membranes is frequently frustrated by their poor processability due to insolubility problem. Current PBO synthesis approach addresses the insolubility issue by solid-state thermal rearrangement (TR) of aromatic polyimides (APIs) with ortho-positioned hydroxyl group, wherein the soluble API precursors are solution cast into membranes before being thermally converted to TR membranes. However, the API-TR process poses some major challenges, complicating the implementation of TR membranes for practical industrial applications. First of all, the temperatures required for the TR conversion are very high (> 400 °C), which severely limits the choice of porous supporting polymers used in common membrane modules such as hollow fibers. Moreover, the high thermal conversion temperature causes collateral thermal degradation in the TR polymers, causing brittleness and defects in the resulting membranes. In addition, the thermal conversion process requires strict inert media (N₂ or vacuum) for the imide-to-benzoxazole conversion to occur, which makes the API-TR process of PBO membranes production highly cost-intensive and complex. This work explores the feasibility of alternative routes to produce high performance PBO-based membranes as well as investigate new synthesis approach of PBOs with much improved processability to overcome the abovementioned challenges in the API-TR route. Specifically, four approaches to form PBO-based membranes have been investigated in this work: Developing an alternate process to produce PBO membranes via thermal cyclodehydration (CD) of polyhydroxyamide (PHA) precursors: Investigating the interplay between the TR and CD processes in a series of blends of API and PHA in varying ratios: Developing a novel one-pot, solution cyclization synthesis route to produce organo-soluble PBOs (S-PBOs) via a silylation assisted process of in situ amide-to-benzoxazole conversion: Synthesizing PBO-based copolymers via a combination of in situ solution cyclization and solid-state TR conversion to maximize separation performance: Advisors/Committee Members: Dr. Hsueh-Chia Chang, Committee Member, Dr. Paul Bohn, Committee Member, Dr. William Phillip, Committee Member, Dr. Ruilan Guo, Research Director.

Subjects/Keywords: polymers; polybenzoxazole; gas separation; cyclodehydration

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APA (6^th Edition):

Kushwaha, A. (2017). Development of Polybenzoxazole (PBO)-Based Polymer Membranes for Gas Separation</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/cj82k645m42

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kushwaha, Ashish. “Development of Polybenzoxazole (PBO)-Based Polymer Membranes for Gas Separation</h1>.” 2017. Thesis, University of Notre Dame. Accessed March 04, 2021. https://curate.nd.edu/show/cj82k645m42.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kushwaha, Ashish. “Development of Polybenzoxazole (PBO)-Based Polymer Membranes for Gas Separation</h1>.” 2017. Web. 04 Mar 2021.

Vancouver:

Kushwaha A. Development of Polybenzoxazole (PBO)-Based Polymer Membranes for Gas Separation</h1>. [Internet] [Thesis]. University of Notre Dame; 2017. [cited 2021 Mar 04]. Available from: https://curate.nd.edu/show/cj82k645m42.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kushwaha A. Development of Polybenzoxazole (PBO)-Based Polymer Membranes for Gas Separation</h1>. [Thesis]. University of Notre Dame; 2017. Available from: https://curate.nd.edu/show/cj82k645m42

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

7. -2634-4309. Characterization of gas separation properties of novel polymer membranes.

Degree: PhD, Chemical engineering, 2015, University of Texas – Austin

URL: http://hdl.handle.net/2152/32936

► Polymers with high permeability (throughput), selectivity (separation efficiency), and long term stability are desired for gas separation applications. This dissertation investigates gas transport properties of… (more)

Subjects/Keywords: Gas separation; Glassy polymer

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APA (6^th Edition):

-2634-4309. (2015). Characterization of gas separation properties of novel polymer membranes. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/32936

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-2634-4309. “Characterization of gas separation properties of novel polymer membranes.” 2015. Doctoral Dissertation, University of Texas – Austin. Accessed March 04, 2021. http://hdl.handle.net/2152/32936.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-2634-4309. “Characterization of gas separation properties of novel polymer membranes.” 2015. Web. 04 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-2634-4309. Characterization of gas separation properties of novel polymer membranes. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2015. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/2152/32936.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-2634-4309. Characterization of gas separation properties of novel polymer membranes. [Doctoral Dissertation]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/32936

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

King Abdullah University of Science and Technology

8. Irerua, Olayinka. Multicomponent Matrimid Membrane for Gas Separation.

Degree: Physical Science and Engineering (PSE) Division, 2012, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/235352

► Matrimid was utilized for the preparation of membranes with asymmetric structures. A combination of well-known solvents for Matrimid which include 1- methyl-2-Pyrrolidone (NMP), tetrahydrofuran (THF),… (more)

Subjects/Keywords: Matrimid; membranes; Gas Separation; Multicomponent

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APA (6^th Edition):

Irerua, O. (2012). Multicomponent Matrimid Membrane for Gas Separation. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/235352

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Irerua, Olayinka. “Multicomponent Matrimid Membrane for Gas Separation.” 2012. Thesis, King Abdullah University of Science and Technology. Accessed March 04, 2021. http://hdl.handle.net/10754/235352.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Irerua, Olayinka. “Multicomponent Matrimid Membrane for Gas Separation.” 2012. Web. 04 Mar 2021.

Vancouver:

Irerua O. Multicomponent Matrimid Membrane for Gas Separation. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2012. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10754/235352.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Irerua O. Multicomponent Matrimid Membrane for Gas Separation. [Thesis]. King Abdullah University of Science and Technology; 2012. Available from: http://hdl.handle.net/10754/235352

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

King Abdullah University of Science and Technology

9. Samin, Umer. An Investigation into the Effect of Cation-exchange on the Adsorption Performance of Indium-based Sodalite-ZMOF.

Degree: Physical Science and Engineering (PSE) Division, 2016, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/607269

► There is a pressing need for advanced solid-state materials that can be implemented in industrial gas separation processes to achieve separations with a significantly reduced… (more)

Subjects/Keywords: ZMOFs; MOFs; Zeolites; Gas Separation

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APA (6^th Edition):

Samin, U. (2016). An Investigation into the Effect of Cation-exchange on the Adsorption Performance of Indium-based Sodalite-ZMOF. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/607269

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Samin, Umer. “An Investigation into the Effect of Cation-exchange on the Adsorption Performance of Indium-based Sodalite-ZMOF.” 2016. Thesis, King Abdullah University of Science and Technology. Accessed March 04, 2021. http://hdl.handle.net/10754/607269.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Samin, Umer. “An Investigation into the Effect of Cation-exchange on the Adsorption Performance of Indium-based Sodalite-ZMOF.” 2016. Web. 04 Mar 2021.

Vancouver:

Samin U. An Investigation into the Effect of Cation-exchange on the Adsorption Performance of Indium-based Sodalite-ZMOF. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10754/607269.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Samin U. An Investigation into the Effect of Cation-exchange on the Adsorption Performance of Indium-based Sodalite-ZMOF. [Thesis]. King Abdullah University of Science and Technology; 2016. Available from: http://hdl.handle.net/10754/607269

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

King Abdullah University of Science and Technology

10. Edhaim, Fatimah A. Synthesis and Characterization of Quaternary Metal Chalcogenide Aerogels for Gas Separation and Volatile Hydrocarbon Adsorption.

Degree: Physical Science and Engineering (PSE) Division, 2017, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/626176

► In this dissertation, the metathesis route of metal chalcogenide aerogel synthesis was expanded by conducting systematic studies between polysulfide building blocks and the 1st-row transition… (more)

▼ In this dissertation, the metathesis route of metal chalcogenide aerogel synthesis was expanded by conducting systematic studies between polysulfide building blocks and the 1st-row transition metal linkers. Resulting materials were screened as sorbents for selective gas separation and volatile organic compounds adsorption. They showed preferential adsorption of polarizable gases (CO2) and organic compounds (toluene). Ion exchange and heavy metal remediation properties have also been demonstrated. The effect of the presence of different counter-ion within chalcogel frameworks on the adsorption capacity of the chalcogels was studied on AFe3Zn3S17 (A= K, Na, and Rb) chalcogels. The highest adsorption capacity toward hydrocarbons and gases was observed on Rb based chalcogels. Adopting a new building block [BiTe3]3- with the 1st-row transition metal ions results in the formation of three high BET surface area chalcogels, KCrBiTe3, KZnBiTe3, and KFeBiTe3. The resulting chalcogels showed preferential adsorption of toluene vapor, and remarkable selectivity of CO2, indicating the potential future use of chalcogels in adsorption-based gas or hydrocarbon separation processes. The synthesis and characterization of the rare earth chalcogels NaYSnS4, NaGdSnS4, and NaTbSnS4 are also reported. Rare earth metal ions react with the thiostannate clusters in formamide solution forming extended polymeric networks by gelation. Obtained chalcogels have high BET surface areas, and showed notable adsorption capacity toward CO2 and toluene vapor. These chalcogels have also been engaged in the absorption of different organic molecules. The results reveal the ability of the chalcogels to distinguish among organic molecules on their electronic structures; hence, they could be used as sensors. Furthermore, the synthesis of metal chalcogenide aerogels Co0.5Sb0.33MoS4 and Co0.5Y0.33MoS4 by the sol-gel method is reported. In this system, the building blocks [MoS4]2- chelated with Co2+ and (Sb3+) or (Y3+) salts in nonaqueous solvents forming amorphous networks with gel properties. The chalcogels obtained after supercritical drying have high BET surface areas. These chalcogels showed higher adsorption capacity of toluene vapor over cyclohexane vapor and high selectivity of CO2 over CH4 or H2. The uptake capacity and selectivity of toluene and CO2 adsorption of Co0.5Sb0.33MoS4 were significantly enhanced by the post-synthetic modifications of various metal species like Ni2+, Li+, and Mg2+. Advisors/Committee Members: Rothenberger, Alexander (advisor), Takanabe, Kazuhiro (committee member), Nunes, Suzana Pereira (committee member), Khushaim, Muna S. (committee member).

Subjects/Keywords: Absorption; Chalcogels; Gas; Hydrocarbon; Separation

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APA (6^th Edition):

Edhaim, F. A. (2017). Synthesis and Characterization of Quaternary Metal Chalcogenide Aerogels for Gas Separation and Volatile Hydrocarbon Adsorption. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/626176

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Edhaim, Fatimah A. “Synthesis and Characterization of Quaternary Metal Chalcogenide Aerogels for Gas Separation and Volatile Hydrocarbon Adsorption.” 2017. Thesis, King Abdullah University of Science and Technology. Accessed March 04, 2021. http://hdl.handle.net/10754/626176.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Edhaim, Fatimah A. “Synthesis and Characterization of Quaternary Metal Chalcogenide Aerogels for Gas Separation and Volatile Hydrocarbon Adsorption.” 2017. Web. 04 Mar 2021.

Vancouver:

Edhaim FA. Synthesis and Characterization of Quaternary Metal Chalcogenide Aerogels for Gas Separation and Volatile Hydrocarbon Adsorption. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2017. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10754/626176.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Edhaim FA. Synthesis and Characterization of Quaternary Metal Chalcogenide Aerogels for Gas Separation and Volatile Hydrocarbon Adsorption. [Thesis]. King Abdullah University of Science and Technology; 2017. Available from: http://hdl.handle.net/10754/626176

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

11. Alnoush, Wajdi Jamal Othman Ahmed. Shortcut Modeling of Natural Gas Supersonic Separation.

Degree: MS, Chemical Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/174536

► Supersonic separation is a novel technology for natural gas separation. The theoretical design uniquely combines concepts from aerodynamics, thermodynamics, physical separation and fluid-dynamics resulting in… (more)

▼ Supersonic separation is a novel technology for natural gas separation. The theoretical design uniquely combines concepts from aerodynamics, thermodynamics, physical separation and fluid-dynamics resulting in an innovative gas conditioning process. It is used to condition the gas by removing condensable vapors and natural gas liquids. The supersonic separator is composed of a converging section, a Laval nozzle and a diverging section. Natural gas flows from reservoirs with low velocity and high pressure. In the supersonic separation process, the temperature drops below the dew point of the natural gas. A multiphase flow is formed. Undesired components form liquid condensates that are centrifugally removed through side collection streams. The goal of this work is to develop a one-dimensional thermodynamic numerical model that presents great potential as a fast and accurate tool that enables the simulation of supersonic separators with significant details. The model is to fill certain gaps found in literature with a shortcut modeling technique. This model would best fit the category of preliminary design tools with decreased computational loads. The model was utilized to test several cases for validation. Air, 3-component natural gas and 13-component natural gas mixtures were tested as working fluids at different conditions and nozzle area ratios. Tests included nozzles with and without side streams. The shortcut model demonstrated matching results with previous models from benchmarked studies. The computational load was immensely decreased by reducing the number of locations tested in the diverging nozzle to locate the side streams and the shockwave. The reduction of computational load was demonstrated by decreasing simulation time by 75%-97% depending on the nozzle geometry and conditions. The model proved to be a quick tool suitable for preliminary designs. Advisors/Committee Members: Kakosimos, Konstantinos (advisor), Castier, Marcelo (advisor), Guo, Bing (committee member).

Subjects/Keywords: Natural gas; Gas separation; converging-diverging nozzle; supersonic separation

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APA (6^th Edition):

Alnoush, W. J. O. A. (2018). Shortcut Modeling of Natural Gas Supersonic Separation. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/174536

Chicago Manual of Style (16^th Edition):

Alnoush, Wajdi Jamal Othman Ahmed. “Shortcut Modeling of Natural Gas Supersonic Separation.” 2018. Masters Thesis, Texas A&M University. Accessed March 04, 2021. http://hdl.handle.net/1969.1/174536.

MLA Handbook (7^th Edition):

Alnoush, Wajdi Jamal Othman Ahmed. “Shortcut Modeling of Natural Gas Supersonic Separation.” 2018. Web. 04 Mar 2021.

Vancouver:

Alnoush WJOA. Shortcut Modeling of Natural Gas Supersonic Separation. [Internet] [Masters thesis]. Texas A&M University; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969.1/174536.

Council of Science Editors:

Alnoush WJOA. Shortcut Modeling of Natural Gas Supersonic Separation. [Masters Thesis]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/174536

King Abdullah University of Science and Technology

12. Alaslai, Nasser Y. Gas Sorption, Diffusion and Permeation in a Polymer of Intrinsic Microporosity (PIM-7).

Degree: Physical Science and Engineering (PSE) Division, 2013, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/293348

► The entire world including Saudi Arabia is dependent on natural gas to provide new energy supplies for the future. Conventional ways for gas separation are… (more)

▼ The entire world including Saudi Arabia is dependent on natural gas to provide new energy supplies for the future. Conventional ways for gas separation are expensive, and, hence, it is very important to reduce the cost and lower the energy consumption. Membrane technology is a relatively new separation process for natural gas purification with large growth potential, specifically for off-shore applications. The economics of any membrane separation process depend primarily on the intrinsic gas permeation properties of the membrane materials. All current commercial membranes for natural gas separation are made from polymers, which have several drawbacks, including low permeability, moderate selectivity, and poor stability in acid gas and hydrocarbon environments. The recent development of polymeric materials called “polymers of intrinsic microporosity” (PIMs) provide a new class of high-performance membrane materials that are anticipated to be used in natural gas separation processes including, but not limited to, acid gas removal and separation of hydrocarbons from methane. PIM-7 is an excellent example of a material from the PIMs series for gas separation. It was selected for this work since it has not been extensively tested for its gas permeation properties to date. Specifically, sorption and mixed-gas permeation data were not available for PIM-7 prior to this work. Sorption isotherms of N2, O2, CH4, CO2, C2H6, C3H8 and n-C4H10 were determined over a range of pressures at 35 °C for PIM-7 using a custom-designed dual-volume pressure decay system. Condensable hydrocarbon gases, such as C3H8 and n-C4H10, show significantly higher solubility than the other less condensable gas of the test series due to their high affinity to the polymer matrix. Dual-mode sorption model parameters were determined from the sorption isotherms. Henry’s law solubility, Langmuir capacity constant and the affinity constant increased with gas condensability. Permeability coefficients of He, H2, N2, O2, CH4, CO2, C2H6, C3H8 and n-C4H10 were measured at 35 °C and 2 atm feed pressure using a home-made constant-volume/variable pressure pure-gas permeation system. Hydrocarbon-induced plasticization of PIM-7 was confirmed by measuring the permeability coefficients of C3H8 and n-C4H10 as function of pressure at 35 °C. Diffusion coefficients were calculated from the permeability and solubility data at 2 atm for all penetrants tested and as function of pressure for C3H8 and n-C4H10; the values for C3 and C4 increased significantly with pressure because of plasticization. Physical aging was studied by measuring the permeability coefficients of a number of gases in fresh and aged films. Mixed-gas permeation tests were performed for a feed mixture of 2 vol% n-butane and 98 vol% methane. Based on BET surface area measurements using N2 as a probe molecule, PIM-7 is a microporous polymer (S = 690 m2/g) and it was expected to exhibit selectivity for n-butane over methane, as previously observed for other microporous polymers, such as PIM-1 and PTMSP.… Advisors/Committee Members: Pinnau, Ingo (advisor), Han, Yu (committee member), Lai, Zhiping (committee member).

Subjects/Keywords: Natural Gas; Gas Separation; Permeation; Sorption; PIM-7; PIMs; Mixed Gas

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Alaslai, N. Y. (2013). Gas Sorption, Diffusion and Permeation in a Polymer of Intrinsic Microporosity (PIM-7). (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/293348

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Alaslai, Nasser Y. “Gas Sorption, Diffusion and Permeation in a Polymer of Intrinsic Microporosity (PIM-7).” 2013. Thesis, King Abdullah University of Science and Technology. Accessed March 04, 2021. http://hdl.handle.net/10754/293348.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Alaslai, Nasser Y. “Gas Sorption, Diffusion and Permeation in a Polymer of Intrinsic Microporosity (PIM-7).” 2013. Web. 04 Mar 2021.

Vancouver:

Alaslai NY. Gas Sorption, Diffusion and Permeation in a Polymer of Intrinsic Microporosity (PIM-7). [Internet] [Thesis]. King Abdullah University of Science and Technology; 2013. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10754/293348.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Alaslai NY. Gas Sorption, Diffusion and Permeation in a Polymer of Intrinsic Microporosity (PIM-7). [Thesis]. King Abdullah University of Science and Technology; 2013. Available from: http://hdl.handle.net/10754/293348

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

13. Gaddes, David Edwin. Innovative Designs for High Performance Micromachined Gas Chromatographic Columns.

Degree: 2013, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/19964

► Gas chromatography (GC) is a versatile technique used in diverse fields such as biological/medical, environmental protection, pharmaceutical, and food/agricultural. This is the premier technique to… (more)

▼ Gas chromatography (GC) is a versatile technique used in diverse fields such as biological/medical, environmental protection, pharmaceutical, and food/agricultural. This is the premier technique to identify and quantify components of interest from a complex mixture. However, the current GC systems are bulky and expensive. Microfabricated gas chromatographic columns (µGCs) have been developed to miniaturize the state of the art systems, allowing for removal of the large and inefficient ovens as well as fabrication of a micro-total analytical system (µTAS) for on-site detection. The µGC devices also provide a platform for creation of novel geometries and stationary phases unique to microfabricated devices. Although there has been considerable success in development of µGC columns and µTAS devices, currently microfabricated devices have not matched the performance of commercial columns in a number of areas. Firstly, microfabricated columns have temperature limitations much lower than that of commercial columns. To date, microfabricated columns have not operated at temperatures above 250 °C due to the epoxies used in the world-to-device connections, while standard commercial columns operate at temperatures up to 350 °C. The thermal limitations of the µGC devices prevent the use of these devices with a large number of compounds typically separated using gas chromatography. Additionally, the separation efficiency of the microfabricated columns have not matched that of commercial columns and no direct comparison of µGC columns to commercial columns has been made. Finally, there is a need for a seamless world-to-device connection to eliminate detrimental dead space and improve column efficiency. Here we address the problems listed above. We have developed novel microfabricated channel designs capable of improved chromatographic performance and allowing for high throughput and lengths up to 10 meters. To operate at high temperatures (up to 400 °C) we have fabricated interfacing and packaging techniques enabling microfabricated columns and have demonstrated the first high temperature separation with a µGC column. We have optimized the world-to-device microfluidic interconnection removing dead volume at the inlet. We have benchmarked the performance of the microfabricated column against commercially available conventional columns and displayed a clear solution to improve the separation efficiency of microfabricated columns. We expect the results of this work to further the µGC field in both research and commercial aspects. Advisors/Committee Members: Srinivas A Tadigadapa, Thesis Advisor/Co-Advisor, Peter J Butler, Thesis Advisor/Co-Advisor, Siyang Zheng, Thesis Advisor/Co-Advisor.

Subjects/Keywords: Gas Chromatography Microfabrication MEMS Chemical Separation

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APA (6^th Edition):

Gaddes, D. E. (2013). Innovative Designs for High Performance Micromachined Gas Chromatographic Columns. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/19964

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gaddes, David Edwin. “Innovative Designs for High Performance Micromachined Gas Chromatographic Columns.” 2013. Thesis, Penn State University. Accessed March 04, 2021. https://submit-etda.libraries.psu.edu/catalog/19964.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gaddes, David Edwin. “Innovative Designs for High Performance Micromachined Gas Chromatographic Columns.” 2013. Web. 04 Mar 2021.

Vancouver:

Gaddes DE. Innovative Designs for High Performance Micromachined Gas Chromatographic Columns. [Internet] [Thesis]. Penn State University; 2013. [cited 2021 Mar 04]. Available from: https://submit-etda.libraries.psu.edu/catalog/19964.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gaddes DE. Innovative Designs for High Performance Micromachined Gas Chromatographic Columns. [Thesis]. Penn State University; 2013. Available from: https://submit-etda.libraries.psu.edu/catalog/19964

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

14. Hassan, Mohammed H. An experimental and simulation investigation of gas transport in a microporous silica membran.

Degree: PhD, Chemical Engineering, 1994, Oregon State University

URL: http://hdl.handle.net/1957/35129

Subjects/Keywords: Gas separation membranes

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APA (6^th Edition):

Hassan, M. H. (1994). An experimental and simulation investigation of gas transport in a microporous silica membran. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/35129

Chicago Manual of Style (16^th Edition):

Hassan, Mohammed H. “An experimental and simulation investigation of gas transport in a microporous silica membran.” 1994. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/35129.

MLA Handbook (7^th Edition):

Hassan, Mohammed H. “An experimental and simulation investigation of gas transport in a microporous silica membran.” 1994. Web. 04 Mar 2021.

Vancouver:

Hassan MH. An experimental and simulation investigation of gas transport in a microporous silica membran. [Internet] [Doctoral dissertation]. Oregon State University; 1994. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/35129.

Council of Science Editors:

Hassan MH. An experimental and simulation investigation of gas transport in a microporous silica membran. [Doctoral Dissertation]. Oregon State University; 1994. Available from: http://hdl.handle.net/1957/35129

Robert Gordon University

15. Kajama, Mohammed Nasir. Catalytic membrane reactor-separator for environmental applications.

Degree: PhD, 2016, Robert Gordon University

URL: https://rgu-repository.worktribe.com/output/348786 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785727

► Flow-through catalytic membrane reactors offer the potential for improved conversions at reduced operating temperature due to product separation and catalyst activity. An experimental work dealing… (more)

Subjects/Keywords: Membrane reactors; Catalysts; Catalytic membranes; Gas separation

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APA (6^th Edition):

Kajama, M. N. (2016). Catalytic membrane reactor-separator for environmental applications. (Doctoral Dissertation). Robert Gordon University. Retrieved from https://rgu-repository.worktribe.com/output/348786 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785727

Chicago Manual of Style (16^th Edition):

Kajama, Mohammed Nasir. “Catalytic membrane reactor-separator for environmental applications.” 2016. Doctoral Dissertation, Robert Gordon University. Accessed March 04, 2021. https://rgu-repository.worktribe.com/output/348786 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785727.

MLA Handbook (7^th Edition):

Kajama, Mohammed Nasir. “Catalytic membrane reactor-separator for environmental applications.” 2016. Web. 04 Mar 2021.

Vancouver:

Kajama MN. Catalytic membrane reactor-separator for environmental applications. [Internet] [Doctoral dissertation]. Robert Gordon University; 2016. [cited 2021 Mar 04]. Available from: https://rgu-repository.worktribe.com/output/348786 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785727.

Council of Science Editors:

Kajama MN. Catalytic membrane reactor-separator for environmental applications. [Doctoral Dissertation]. Robert Gordon University; 2016. Available from: https://rgu-repository.worktribe.com/output/348786 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785727

University of Edinburgh

16. Lee, Michael James. Novel microporous polymers for use as gas separation membranes.

Degree: PhD, 2016, University of Edinburgh

URL: http://hdl.handle.net/1842/25786

► Polymers of Intrinsic Microporosity (PIMs) combine the desirable processability of polymers with a significant degree of microporosity generated from the inefficient packing of their rigid… (more)

▼ Polymers of Intrinsic Microporosity (PIMs) combine the desirable processability of polymers with a significant degree of microporosity generated from the inefficient packing of their rigid and contorted structures. They are attracting attention for a variety of applications including as membrane materials for gas separations. Over the last 30 years, membranes have become an established technology for separating gases and are likely to play key role in reducing the environmental impact and costs of many industrial processes such as O2 or N2 enrichment from air, natural gas upgrading and hydrogen recovery from ammonia production. This thesis describes the synthesis of a series of novel PIMs, primarily PIM-polyimide structures (PIM-PI) and investigates their potential in such applications. In particular, it focuses on the design and synthesis of solution processable PIMs in order to study how structural differences affect the gas permeability. The first section describes the synthesis of a variety of PIM-PIs using large bulky diamines derived from spirobisindane (SBI) and biphenylfluorene (BPF) structures which are useful monomers for achieving high BET (Brunauer-Emmett- Teller) surface areas (> 650 m2 g-1). The second section describes a whole series PIs based on novel and literature based Tröger’s base (TB) diamine monomers. Most of these exhibited good solubility, excellent thermal stability and intrinsic microporosity, with apparent BET surface areas in the range 450-739 m2 g-1. Notably, a polyimide derived from Me2TB and pyromellitic anhydride demonstrates gas permeability data above the 2008 upper bounds for important gas pairs such as O2/N2, H2/N2 and H2/CH4. The third section aims to enforce rigidity within the polymers further by incorporating differently substituted monomers based on rigid ethanoanthracene (EA) units. This includes the formation of a novel EA-EA based PI with an exceptionally rigid polymeric structure, possessing a BET surface area of 694 m2 g-1. In addition to very high permeability, this polymer demonstrates improved gas selectivity due to its enhanced performance as a molecular sieve, placing it amongst some of the highest performing polymers to date. The final section looks at other ways in which rigidity can be enforced including the formation of TB-polymers and thermally rearranged (TR) polymers and assesses their potential for future investigations.

Subjects/Keywords: 660; microporous; polymer; gas separation; membrane

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lee, M. J. (2016). Novel microporous polymers for use as gas separation membranes. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/25786

Chicago Manual of Style (16^th Edition):

Lee, Michael James. “Novel microporous polymers for use as gas separation membranes.” 2016. Doctoral Dissertation, University of Edinburgh. Accessed March 04, 2021. http://hdl.handle.net/1842/25786.

MLA Handbook (7^th Edition):

Lee, Michael James. “Novel microporous polymers for use as gas separation membranes.” 2016. Web. 04 Mar 2021.

Vancouver:

Lee MJ. Novel microporous polymers for use as gas separation membranes. [Internet] [Doctoral dissertation]. University of Edinburgh; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1842/25786.

Council of Science Editors:

Lee MJ. Novel microporous polymers for use as gas separation membranes. [Doctoral Dissertation]. University of Edinburgh; 2016. Available from: http://hdl.handle.net/1842/25786

Hong Kong University of Science and Technology

17. Wang, Maojian CBME. Optimization and integration method of integrated gasification combined cycle system based on novel simplified models.

Degree: 2017, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-94624 ; https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html

► As promising power generation technology, the advantages of Integrated Gasification Combined Cycle (IGCC) system are confirmed. However, high electricity production cost is the bottleneck before… (more)

▼ As promising power generation technology, the advantages of Integrated Gasification Combined Cycle (IGCC) system are confirmed. However, high electricity production cost is the bottleneck before fully commercialization. IGCC complicated process, including gasification, power and Air Separation Unit (ASU) island, provides opportunities to increase its efficiency through process optimization and integration. But there is a requirement of suitable models considering both prediction accuracy and flexibility to overcome existing barrier of large-scale optimization problem. In this thesis, the gap is fulfilled by proposing simplified models for three IGCC islands. Firstly, the novel simplified gasification island model is proposed based on reaction mechanism simplification using Water Gas Shit Reaction. After validation by experiment data, Cold Gas Efficiency optimization of IGCC plant gasifier is achieved with 10 % improvement. Then simplified model of power island is proposed and compared with rigorous commercial simulator. It is the foundation of further Gas Turbine performance optimization and Steam Turbine (ST) simultaneous parameter optimization and heat integration considering boiler feed water preheating. As the extension of simplified ST model, a novel shortcut model is proposed to optimize the regenerative retrofit for steam Rankine cycle. The most profitable regenerative scheme could generate from single to multiple extractions situations. After the validations with non-linear solver, the advantages of simple optimization procedures without building simulation and applying optimization algorithm are demonstrated in industrial case. Besides that, a simplified cryogenic ASU model is proposed and the non-standard operation conditions shows good performance for IGCC plant application. Finally, using all proposed models, the simultaneous parameter optimization and integration of IGCC system is completed in the aspect of economic and thermal performance. The simultaneous methodology is applied for gasification island firstly with 40 % profit and 4 % CGE improvements, and then for power and ASU island together with stepwise power output increment among cases.

Subjects/Keywords: Coal gasification ; Synthesis gas ; Gases ; Separation

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APA (6^th Edition):

Wang, M. C. (2017). Optimization and integration method of integrated gasification combined cycle system based on novel simplified models. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-94624 ; https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wang, Maojian CBME. “Optimization and integration method of integrated gasification combined cycle system based on novel simplified models.” 2017. Thesis, Hong Kong University of Science and Technology. Accessed March 04, 2021. http://repository.ust.hk/ir/Record/1783.1-94624 ; https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wang, Maojian CBME. “Optimization and integration method of integrated gasification combined cycle system based on novel simplified models.” 2017. Web. 04 Mar 2021.

Vancouver:

Wang MC. Optimization and integration method of integrated gasification combined cycle system based on novel simplified models. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2017. [cited 2021 Mar 04]. Available from: http://repository.ust.hk/ir/Record/1783.1-94624 ; https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wang MC. Optimization and integration method of integrated gasification combined cycle system based on novel simplified models. [Thesis]. Hong Kong University of Science and Technology; 2017. Available from: http://repository.ust.hk/ir/Record/1783.1-94624 ; https://doi.org/10.14711/thesis-991012551469003412 ; http://repository.ust.hk/ir/bitstream/1783.1-94624/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Salford

18. El-Amari, Abdulla Ali. Separation of acidic gases using hollow fibre membrane contractors.

Degree: PhD, 2002, University of Salford

URL: http://usir.salford.ac.uk/id/eprint/26653/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249007

► Gas absorption in hollow fibre contactors is being increasingly used due to their enormous surface area/volume ratio. The capability of the hollow fibre membrane modules… (more)

▼ Gas absorption in hollow fibre contactors is being increasingly used due to their enormous surface area/volume ratio. The capability of the hollow fibre membrane modules for the removal of CO 2 and SO2 from a binary gas mixture has been investigated experimentally. Four different modules were used in this study. The membranes in modules one and two were made of microporous polypropylene. The third module was made of non-porous silicone rubber (polydimethylsiloxane) while the latter one was a polyvinylidenefluoride (PVDF) asymmetric hollow fibre membrane. The gas mixtures used in the experiments were composed of 9.5% CO2 and 1% SO2 in N 2 , which was introduced into the hollow fibre lumen, while the absorbent liquid was fed into the shell side of module. The absorbent liquids used were water, aqueous solutions of diethanolamine (DBA) and ammonia at different concentrations (5, 10 and 20 wt%). The effects of different operating conditions on the permeation process have been investigated for co-current and counter-current flow patterns. In addition, to improve the silicone rubber hollow fibre membrane performance, baffles were installed within the shell of the permeator to increase liquid fibre contact. The results obtained showed that the use of baffles within the shell of the permeator improved the separation performance of the non-porous membrane module without any substantial increase in the physical size of the contacting device. Studies also showed that improved performance was observed when the system was operated under a counter-current flow pattern. The results showed that the use of an absorbent liquid in the permeate side of the fibres increased the selectivity of the membranes used, and reduced the need to maintain a high pressure ratio across the membrane. A decrease in the feed gas flow rate or increase in liquid flow rate generally improved the removal of gases. The results showed that the use of aqueous reactive solutions as an absorbing medium in the permeate side of the hollow fibre permeator can significantly improve CO2 removal from the gas mixture. However, the main problem when using a microporous membrane coupled with aqueous solutions of diethanolamine as absorbent was wetting of the microporous membrane by amine solutions. For 862 separation, the highest removal was attained using the microporous membrane coupled with water as absorbent liquid. This demonstrates that a hollow fibre based device can be a very efficient gas liquid contactor. The separation process was simulated with a numerical model based on the effective permeabilities of gases and compared with the experimental results. The model simulations showed good agreement with the experimental observations.

Subjects/Keywords: 660; Gas separation

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APA (6^th Edition):

El-Amari, A. A. (2002). Separation of acidic gases using hollow fibre membrane contractors. (Doctoral Dissertation). University of Salford. Retrieved from http://usir.salford.ac.uk/id/eprint/26653/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249007

Chicago Manual of Style (16^th Edition):

El-Amari, Abdulla Ali. “Separation of acidic gases using hollow fibre membrane contractors.” 2002. Doctoral Dissertation, University of Salford. Accessed March 04, 2021. http://usir.salford.ac.uk/id/eprint/26653/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249007.

MLA Handbook (7^th Edition):

El-Amari, Abdulla Ali. “Separation of acidic gases using hollow fibre membrane contractors.” 2002. Web. 04 Mar 2021.

Vancouver:

El-Amari AA. Separation of acidic gases using hollow fibre membrane contractors. [Internet] [Doctoral dissertation]. University of Salford; 2002. [cited 2021 Mar 04]. Available from: http://usir.salford.ac.uk/id/eprint/26653/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249007.

Council of Science Editors:

El-Amari AA. Separation of acidic gases using hollow fibre membrane contractors. [Doctoral Dissertation]. University of Salford; 2002. Available from: http://usir.salford.ac.uk/id/eprint/26653/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249007

Virginia Tech

19. Borjigin, Hailun. Synthesis and Characterization of High Performance Polymers for Gas Separation Membranes.

Degree: PhD, Macromolecular Science and Engineering, 2015, Virginia Tech

URL: http://hdl.handle.net/10919/74231

► This dissertation focuses on the synthesis and characterization of high performance polymers, especially polyimides, polybenzoxazoles and polybenzimidazoles for gas separation applications. An abundance of monomers… (more)

▼ This dissertation focuses on the synthesis and characterization of high performance polymers, especially polyimides, polybenzoxazoles and polybenzimidazoles for gas separation applications. An abundance of monomers and novel polymers were synthesized and fabricated into membranes. Thermally rearranged polybenzoxazoles and their precursor polyimides were systematically studied with regard to size of pendant functional groups, thermal rearrangement conversion, and relationship of backbone structure/gas transport properties. 3,3'-Diamino-4,4'-dihydroxybiphenyl was synthesized using an economical route. Meta and para oriented polyimides with different ortho-functionality were synthesized and these polymers were thermally rearranged into polybenzoxazoles. The polar hydroxyl functional groups on the polyimide backbone diminished the meta/para isomer effect of the permeability coefficients of the polymers and only a small difference between meta- and para-oriented polyhydroxyimides in permeability coefficients was observed. The TR polybenzoxazoles derived from meta/para-oriented isomeric polyimides with ortho functionality had similar gas separation properties, especially for CO2/CH4 separation, and it is hypothesized that this is due to a lack of intersegmental mobility distinction between the two isomeric TR polymers. The TR polymers derived from the polyimides with acetate ortho-functional groups had significantly better gas separation properties than ones derived from the precursor with hydroxyl ortho-functional groups. Polybenzimidazoles were also investigated for use as gas separation membranes. Polybenzimidazoles are some of the most thermally stable polymers. However, commercial polybenzimidazoles do not have good solubility in common solvents. The solubility issue was solved by incorporating sulfonyl linkages into the polybenzimidazole backbone using a 3,3',4,4'-tetraaminodiphenylsulfone (TADPS) monomer. 3,3',4,4'-Tetraaminodiphenylsulfone was synthesized by a novel route with higher overall yield and less steps than the traditional synthetic method. The TADPS based polybenzimidazoles also demonstrated better thermal stability than commercial polybenzimidazole. The meta/para oriented isomer effect on gas transport properties is discussed. TADPS-based polybenzimidazoles exhibited H2/CO2 gas separation properties near or surpassing the upper bound with H2 permeabilities from 3.6 to 5.7 Barrer and selectivities from 10.1 to 32.2 at 35 °C. Advisors/Committee Members: Riffle, Judy S. (committeechair), Mecham, Beverly S. (committee member), Esker, Alan R. (committee member), Turner, S. Richard (committee member), Davis, Richey M. (committee member).

Subjects/Keywords: Gas Separation Membrane; Thermally Rearranged Polymers; Polybenzimidazoles

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APA (6^th Edition):

Borjigin, H. (2015). Synthesis and Characterization of High Performance Polymers for Gas Separation Membranes. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/74231

Chicago Manual of Style (16^th Edition):

Borjigin, Hailun. “Synthesis and Characterization of High Performance Polymers for Gas Separation Membranes.” 2015. Doctoral Dissertation, Virginia Tech. Accessed March 04, 2021. http://hdl.handle.net/10919/74231.

MLA Handbook (7^th Edition):

Borjigin, Hailun. “Synthesis and Characterization of High Performance Polymers for Gas Separation Membranes.” 2015. Web. 04 Mar 2021.

Vancouver:

Borjigin H. Synthesis and Characterization of High Performance Polymers for Gas Separation Membranes. [Internet] [Doctoral dissertation]. Virginia Tech; 2015. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10919/74231.

Council of Science Editors:

Borjigin H. Synthesis and Characterization of High Performance Polymers for Gas Separation Membranes. [Doctoral Dissertation]. Virginia Tech; 2015. Available from: http://hdl.handle.net/10919/74231

University of Melbourne

20. SHANG, JIN. Novel separation mechanism for CO2 capture - "molecular trapdoor" effect.

Degree: 2013, University of Melbourne

URL: http://hdl.handle.net/11343/38180

► Carbon dioxide capture from various gas streams such as nitrogen-rich flue gas and methane-rich natural gas has gained escalating interests worldwide due to the ever-increasing… (more)

▼ Carbon dioxide capture from various gas streams such as nitrogen-rich flue gas and methane-rich natural gas has gained escalating interests worldwide due to the ever-increasing environmental concern over the greenhouse effect. Energy-efficient strategies for mitigating carbon emission urgently need microporous adsorbents that show high selectivities towards CO2. Highly selective separation of small molecules such as carbon capture relevant gases (i.e. CO2, N2, and CH4) as well as other industrial important gases is difficult to achieve if all of the molecules can access the internal surface of an adsorbent so that the selectivity depends only on differences in interaction of these molecules with the surface. Obviously, a steric separation mechanism such as that relying on molecular size can provide higher selectivities. Very few candidate molecular sieving adsorbents, however, have been developed for this purpose because of the closeness in size between these molecules. The objective of this study is to develop a new class of adsorbents that embody a new mechanism to achieve “molecular sieving” level selectivity for challenging gas separations including carbon capture. Zeolites are ideal candidate adsorbents to accomplish steric-type separations at the molecular level. This thesis investigated one type of zeolite framework (chabazite) that has pores commensurate with the size of the molecules to be separated. We first investigated encapsulation of small molecules such as N2 and CH4 in a potassium-exchanged chabazite zeolite. By performing adsorption measurements, Temperature Programmed Desorption (TPD) experiments, and designed gas uptake and release experiments, we revealed that a potassium chabazite zeolite with silicon-to-aluminium ratio of 2.2 can act as a nanocontainer to store N2 and CH4 by a temperature controlled “valve”. The cation type and cation density constitute the structural determining factors responsible for this behaviour. This work provides a promising material for gas storage superior in terms of mild working conditions (i.e. relatively low working temperature and pressure) and also suggests that chabazite could admit gas molecules in a controlled manner, making it promising for high performance gas separation. Stimulated by the apparent paradox encountered in the gas encapsulation work – a gas molecule could penetrate a pore aperture nearly completely blocked by cation, we studied the underlying physical mechanism of this process by a combination of experimental and computational approaches, including single component gas adsorption, solid nuclear magnetic resonance (NMR), positron annihilation lifetime spectroscopy (PALS), in situ synchrotron X-ray powder diffraction of adsorption, binary gas adsorption, and density functional theory (DFT) calculations. The results show that a cation-kept zeolite aperture exclusively admits certain molecules regardless of size. We demonstrated this mechanism by…

Subjects/Keywords: gas separation; CO2 capture; molecular trapdoor

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APA (6^th Edition):

SHANG, J. (2013). Novel separation mechanism for CO2 capture - "molecular trapdoor" effect. (Doctoral Dissertation). University of Melbourne. Retrieved from http://hdl.handle.net/11343/38180

Chicago Manual of Style (16^th Edition):

SHANG, JIN. “Novel separation mechanism for CO2 capture - "molecular trapdoor" effect.” 2013. Doctoral Dissertation, University of Melbourne. Accessed March 04, 2021. http://hdl.handle.net/11343/38180.

MLA Handbook (7^th Edition):

SHANG, JIN. “Novel separation mechanism for CO2 capture - "molecular trapdoor" effect.” 2013. Web. 04 Mar 2021.

Vancouver:

SHANG J. Novel separation mechanism for CO2 capture - "molecular trapdoor" effect. [Internet] [Doctoral dissertation]. University of Melbourne; 2013. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11343/38180.

Council of Science Editors:

SHANG J. Novel separation mechanism for CO2 capture - "molecular trapdoor" effect. [Doctoral Dissertation]. University of Melbourne; 2013. Available from: http://hdl.handle.net/11343/38180

21. Shilton, Simon J. The effect of spinning conditions on the gas permeation performance of hollow fibre membranes.

Degree: PhD, 1992, University of Strathclyde

URL: http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=23488 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384842

Subjects/Keywords: 660; Gas separation

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APA (6^th Edition):

Shilton, S. J. (1992). The effect of spinning conditions on the gas permeation performance of hollow fibre membranes. (Doctoral Dissertation). University of Strathclyde. Retrieved from http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=23488 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384842

Chicago Manual of Style (16^th Edition):

Shilton, Simon J. “The effect of spinning conditions on the gas permeation performance of hollow fibre membranes.” 1992. Doctoral Dissertation, University of Strathclyde. Accessed March 04, 2021. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=23488 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384842.

MLA Handbook (7^th Edition):

Shilton, Simon J. “The effect of spinning conditions on the gas permeation performance of hollow fibre membranes.” 1992. Web. 04 Mar 2021.

Vancouver:

Shilton SJ. The effect of spinning conditions on the gas permeation performance of hollow fibre membranes. [Internet] [Doctoral dissertation]. University of Strathclyde; 1992. [cited 2021 Mar 04]. Available from: http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=23488 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384842.

Council of Science Editors:

Shilton SJ. The effect of spinning conditions on the gas permeation performance of hollow fibre membranes. [Doctoral Dissertation]. University of Strathclyde; 1992. Available from: http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=23488 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384842

Georgia Tech

22. Hays, Samuel. Structure and stability of carbon molecular sieve membranes derived from 6FDA:BPDA-dam precursors.

Degree: MS, Chemical and Biomolecular Engineering, 2020, Georgia Tech

URL: http://hdl.handle.net/1853/63631

► Carbon molecular sieve (CMS) membranes are an advanced class of membrane materials useful for many different gas-pair separations. One drawback of CMS membranes, as with… (more)

Subjects/Keywords: Carbon molecular sieve; Membrane; Gas separation

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APA (6^th Edition):

Hays, S. (2020). Structure and stability of carbon molecular sieve membranes derived from 6FDA:BPDA-dam precursors. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/63631

Chicago Manual of Style (16^th Edition):

Hays, Samuel. “Structure and stability of carbon molecular sieve membranes derived from 6FDA:BPDA-dam precursors.” 2020. Masters Thesis, Georgia Tech. Accessed March 04, 2021. http://hdl.handle.net/1853/63631.

MLA Handbook (7^th Edition):

Hays, Samuel. “Structure and stability of carbon molecular sieve membranes derived from 6FDA:BPDA-dam precursors.” 2020. Web. 04 Mar 2021.

Vancouver:

Hays S. Structure and stability of carbon molecular sieve membranes derived from 6FDA:BPDA-dam precursors. [Internet] [Masters thesis]. Georgia Tech; 2020. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1853/63631.

Council of Science Editors:

Hays S. Structure and stability of carbon molecular sieve membranes derived from 6FDA:BPDA-dam precursors. [Masters Thesis]. Georgia Tech; 2020. Available from: http://hdl.handle.net/1853/63631

University of Texas – Austin

23. Smith, Zachary Pace. Fundamentals of gas sorption and transport in thermally rearranged polyimides.

Degree: PhD, Chemical Engineering, 2014, University of Texas – Austin

URL: http://hdl.handle.net/2152/30467

► Thermally rearranged polymers are formed from the solid-state thermal reaction of polyimides and polyamides that contain reactive groups ortho position to their diamine. These polymers… (more)

▼ Thermally rearranged polymers are formed from the solid-state thermal reaction of polyimides and polyamides that contain reactive groups ortho position to their diamine. These polymers have shown outstanding transport properties for gas separation applications. The thrust of this work is to critically examine the chemical and morphological structure of these polymers and to identify the fundamental contributions of gas sorption to permeability. To accomplish this goal, a series of TR polymers and TR polymer precursors have been synthesized and investigated for transport properties. As a function of conversion, diffusivity increases more dramatically than sorption, which explains the outstanding permeabilities observed for these samples. Modifications to the polymer backbone structure, which can be achieved by adding rigid functional groups such as hexafluoroisopropylidene-functional linking groups, can further be used to improve permeabilities. The precursor used to form TR polymers has dramatic effects on the final polymer transport properties. Despite having nearly identical polymer structure, TR polymers formed from polyamide precursors have lower combinations of permeability and selectivity than TR polymers formed from polyimide precursors. In addition to structure-property studies with TR polymers, this thesis also present comparisons of permeability, diffusivity, and sorption of sparingly soluble gases (i.e., hydrogen and helium) for hydrocarbon-based polymer, highly fluorinated polymers, perfluoropolymers, and a silicon-based polymer. An explanation for the unique transport properties of perfluoropolymers is presented from the standpoint of the solution-diffusion model, whereby perfluoropolymers have uniquely different solubility selectivities than hydrocarbon-based polymers. Additionally, a large database of sorption, diffusion, and permeability coefficients is used to determine the contributions of free volume on solubility selectivity in polymers. Advisors/Committee Members: Freeman, B. D. (Benny D.) (advisor), Paul, Donald R. (advisor), Willson, Carlton G (committee member), Sanchez, Isaac C (committee member), Hill, Anita J (committee member).

Subjects/Keywords: Polymers; Gas separation membranes; Thermal reactions

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APA (6^th Edition):

Smith, Z. P. (2014). Fundamentals of gas sorption and transport in thermally rearranged polyimides. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/30467

Chicago Manual of Style (16^th Edition):

Smith, Zachary Pace. “Fundamentals of gas sorption and transport in thermally rearranged polyimides.” 2014. Doctoral Dissertation, University of Texas – Austin. Accessed March 04, 2021. http://hdl.handle.net/2152/30467.

MLA Handbook (7^th Edition):

Smith, Zachary Pace. “Fundamentals of gas sorption and transport in thermally rearranged polyimides.” 2014. Web. 04 Mar 2021.

Vancouver:

Smith ZP. Fundamentals of gas sorption and transport in thermally rearranged polyimides. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2014. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/2152/30467.

Council of Science Editors:

Smith ZP. Fundamentals of gas sorption and transport in thermally rearranged polyimides. [Doctoral Dissertation]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/30467

King Abdullah University of Science and Technology

24. Alghunaimi, Fahd. Natural Gas Sweetening by Ultra-Microporous Polyimides Membranes.

Degree: Physical Science and Engineering (PSE) Division, 2017, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/625308

► Most natural gas fields in Saudi Arabia contain around 10 mol.% carbon dioxide. The present technology to remove carbon dioxide is performed by chemical absorption,… (more)

▼ Most natural gas fields in Saudi Arabia contain around 10 mol.% carbon dioxide. The present technology to remove carbon dioxide is performed by chemical absorption, which has many drawbacks. Alternatively, membrane-based gas separation technology has attracted great interest in recent years due to: (i) simple modular design, (ii) potential cost effectiveness, (iii) ease of scale-up, and (iv) environmental friendliness. The state-of-the-art membrane materials for natural gas sweetening are glassy cellulose acetate and polyimide, which were introduced in the 1980s. In the near future, the kingdom is planning to boost its production of natural gas for power generation and increase the feedstock for new petrochemical plants. Therefore, the kingdom and worldwide market has an urgent need for better membrane materials to remove carbon dioxide from raw natural gas. The focus of this dissertation was to design new polyimide membrane materials for CO2/CH4 separation exhibiting high permeability and high selectivity relative to the standard commercial materials tested under realistic mixed-gas feed conditions. Furthermore, this study provided a fundamental understanding of structure/gas transport property relationships of triptycene-based PIM-polyimides. Optimally designed intrinsically microporous polyimide (PIM-PIs) membranes in this work exhibited drastically increased CO2/CH4 selectivities of up to ~75. In addition, a novel triptycene-based hydroxyl-containing polyimide (TDA1-APAF) showed 5-fold higher permeabilities over benchmark commercial materials such as cellulose acetate. Furthermore, this polyimide had a N2/CH4 selectivity of 2.3, thereby making it possible to simultaneously treat CO2- and N2-contaminated natural gas. Also, TDA1-APAF showed a CO2 permeability of 21 Barrer under binary 1:1 CO2/CH4 mixed-gas feed with a selectivity of 72 at a partial CO2 pressure of 10 bar which are significantly better than cellulose triacetate. These results suggest that TDA1-APAF polyimide is an excellent candidate membrane material for removal of CO2 and N2 from natural gas. Moreover, based on the collected data for CO2/CH4 mixed-gas experiments from this work and previously published reports, a new mixed-gas 2017 CO2/CH4 permeability/selectivity upper bound curve was initiated to reflect the actual performance including plasticization phenomena at high feed pressure and 10 bar CO2 partial pressure to simulate the real conditions of the wellhead pressure. Advisors/Committee Members: Pinnau, Ingo (advisor), Peinemann, Klaus-Viktor (committee member), Han, Yu (committee member), Koros, William J. (committee member).

Subjects/Keywords: Membrane; Natural Gas; Separation; Polyimide; CO2; CH4

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APA (6^th Edition):

Alghunaimi, F. (2017). Natural Gas Sweetening by Ultra-Microporous Polyimides Membranes. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/625308

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Alghunaimi, Fahd. “Natural Gas Sweetening by Ultra-Microporous Polyimides Membranes.” 2017. Thesis, King Abdullah University of Science and Technology. Accessed March 04, 2021. http://hdl.handle.net/10754/625308.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Alghunaimi, Fahd. “Natural Gas Sweetening by Ultra-Microporous Polyimides Membranes.” 2017. Web. 04 Mar 2021.

Vancouver:

Alghunaimi F. Natural Gas Sweetening by Ultra-Microporous Polyimides Membranes. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2017. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10754/625308.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Alghunaimi F. Natural Gas Sweetening by Ultra-Microporous Polyimides Membranes. [Thesis]. King Abdullah University of Science and Technology; 2017. Available from: http://hdl.handle.net/10754/625308

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

25. Shah, Miral Naresh 1987-. Synthesis and Characterization of Films and Membranes of Metal-Organic Framework (MOF) for Gas Separation Applications.

Degree: MS, Chemical Engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/148212

► Metal-Organic Frameworks (MOFs) are nanoporous framework materials with tunable pore size and functionality, and hence attractive for gas separation membrane applications. Zeolitic Imidazolate Frameworks (ZIFs),… (more)

▼ Metal-Organic Frameworks (MOFs) are nanoporous framework materials with tunable pore size and functionality, and hence attractive for gas separation membrane applications. Zeolitic Imidazolate Frameworks (ZIFs), a subclass of MOFs, are known for their high thermal and chemical stability. ZIF-8 has demonstrated potential to kinetically separate propane/propene in powder and membrane form. ZIF-8 membranes propane-propene separation performance is superior in comparison to polymer, mixed matrix and carbon membranes. The overarching theme of my research is to address challenges that hinder fabrication of MOF membranes on a commercial scale and in a reproducible and scalable manner. 1. Current approaches, are specific to a given ZIF, a general synthesis route is not available. Use of multiple steps for surface modification or seeding causes reproducibility and scalability issues. 2. Conventional fabrication techniques are batch processes, thereby limiting their commercialization. Here we demonstrate two new approaches that can potentially address these challenges. First, we report one step in situ synthesis of ZIF-8 membranes on more commonly used porous α-alumina supports. By incorporating sodium formate in the in situ growth solution, well intergrown ZIF-8 membranes were synthesized on unmodified supports. The mechanism by which sodium formate promotes heterogeneous nucleation was investigated. Sodium formate reacts with zinc source to form zinc oxide layer, which in turn promotes heterogeneous nucleation. Sodium formate promotes heterogeneous nucleation in other ZIF systems as well, leading to ZIF-7, Zn(Im)2 (ZIF-61 analogue), ZIF-90, and SIM-1 films. Thus one step in situ growth using sodium formate provides a simplified, reproducible and potentially general route for ZIF film fabrication. One step in situ route, although advantageous; is still conventional in nature and batch process with long synthesis time. This limits commercialization, due to scalability and manufacturing cost issues. Taking advantage of coordination chemistry of MOFs and using temperature as driving force, continuous well-intergrown membranes of HKUST-1 and ZIF-8 in relatively short time (15 min) using Rapid Thermal Deposition (RTD). With minimum precursor consumption and simplified synthesis protocol, RTD provides potential for a continuous, scalable, reproducible and commercializable route for MOF membrane fabrication. RTD-prepared MOF membranes show improved separation performances, indicating improved microstructure. Advisors/Committee Members: Jeong, Hae-Kwon (advisor), Akbulut, Mustafa (committee member), Zhou, Hong-Cai (Joe) (committee member).

Subjects/Keywords: zeolites; propylene/propane separation; gas separation; membranes; films; Metal-Organic Frameworks

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APA (6^th Edition):

Shah, M. N. 1. (2012). Synthesis and Characterization of Films and Membranes of Metal-Organic Framework (MOF) for Gas Separation Applications. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/148212

Chicago Manual of Style (16^th Edition):

Shah, Miral Naresh 1987-. “Synthesis and Characterization of Films and Membranes of Metal-Organic Framework (MOF) for Gas Separation Applications.” 2012. Masters Thesis, Texas A&M University. Accessed March 04, 2021. http://hdl.handle.net/1969.1/148212.

MLA Handbook (7^th Edition):

Shah, Miral Naresh 1987-. “Synthesis and Characterization of Films and Membranes of Metal-Organic Framework (MOF) for Gas Separation Applications.” 2012. Web. 04 Mar 2021.

Vancouver:

Shah MN1. Synthesis and Characterization of Films and Membranes of Metal-Organic Framework (MOF) for Gas Separation Applications. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969.1/148212.

Council of Science Editors:

Shah MN1. Synthesis and Characterization of Films and Membranes of Metal-Organic Framework (MOF) for Gas Separation Applications. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/148212

26. Sutthisa Konruang. Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation .

Degree: คณะวิทยาศาสตร์ ภาควิชาฟิสิกส์, 2015, Prince of Songkla University

URL: http://kb.psu.ac.th/psukb/handle/2010/10215

Subjects/Keywords: Gas separation membranes; Gases Separation

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APA (6^th Edition):

Konruang, S. (2015). Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation . (Thesis). Prince of Songkla University. Retrieved from http://kb.psu.ac.th/psukb/handle/2010/10215

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Konruang, Sutthisa. “Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation .” 2015. Thesis, Prince of Songkla University. Accessed March 04, 2021. http://kb.psu.ac.th/psukb/handle/2010/10215.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Konruang, Sutthisa. “Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation .” 2015. Web. 04 Mar 2021.

Vancouver:

Konruang S. Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation . [Internet] [Thesis]. Prince of Songkla University; 2015. [cited 2021 Mar 04]. Available from: http://kb.psu.ac.th/psukb/handle/2010/10215.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Konruang S. Preparation of polysulfone and polyethylene membrane and surface modification by plasma and UV radiation for oxygen/nitrogen and carbon dioxide/methane gas separation . [Thesis]. Prince of Songkla University; 2015. Available from: http://kb.psu.ac.th/psukb/handle/2010/10215

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Colorado School of Mines

27. Wu, Ting. Porous crystalline molecular-sieve membranes for xenon separation from krypton and air.

Degree: PhD, Chemical and Biological Engineering, 2018, Colorado School of Mines

URL: http://hdl.handle.net/11124/172548

► The main objective of this work is the development of continuous crystalline microporous molecular sieve membranes to separate Kr/Xe and air/Xe gas mixtures. Specifically, for… (more)

Subjects/Keywords: gas separation; molecular sieve; xenon recovery; krypton; air separation; nanoporous

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APA (6^th Edition):

Wu, T. (2018). Porous crystalline molecular-sieve membranes for xenon separation from krypton and air. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/172548

Chicago Manual of Style (16^th Edition):

Wu, Ting. “Porous crystalline molecular-sieve membranes for xenon separation from krypton and air.” 2018. Doctoral Dissertation, Colorado School of Mines. Accessed March 04, 2021. http://hdl.handle.net/11124/172548.

MLA Handbook (7^th Edition):

Wu, Ting. “Porous crystalline molecular-sieve membranes for xenon separation from krypton and air.” 2018. Web. 04 Mar 2021.

Vancouver:

Wu T. Porous crystalline molecular-sieve membranes for xenon separation from krypton and air. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11124/172548.

Council of Science Editors:

Wu T. Porous crystalline molecular-sieve membranes for xenon separation from krypton and air. [Doctoral Dissertation]. Colorado School of Mines; 2018. Available from: http://hdl.handle.net/11124/172548

Virginia Commonwealth University

28. Sekizkardes, Ali Kemal, PhD. Pyrene-Derived Porous Organic Polymers: Design, Synthesis, and Application to Gas Storage and Separation.

Degree: PhD, Chemistry, 2014, Virginia Commonwealth University

URL: https://doi.org/10.25772/Z2TC-Q798 ; https://scholarscompass.vcu.edu/etd/3649

► Porous organic polymers (POPs) received great attention in recent years because of their novel properties such as permanent porosity, adjustable chemical nature, and remarkable… (more)

▼ Porous organic polymers (POPs) received great attention in recent years because of their novel properties such as permanent porosity, adjustable chemical nature, and remarkable thermal and chemical stability. These attractive features make POPs very promising candidates for use in gas separation and storage applications. In particular, CO₂ capture and separation from gas mixtures by POPs have been intensively investigated in recent years because of the greenhouse nature of CO₂, which is considered a leading cause for global warming. CO₂ chemical absorption by amine solutions from the flue gas of coal-fired power plants suffers from several challenges such as high-energy consumption in desorption, chemical instability, volatility, and corrosive nature, limiting the widespread use of this technology. To mitigate these limitations, new adsorbents with improved CO₂ capturing properties need to be designed, synthesized, and tested. Alternatively, the use of cleaner fuels such as methane can reduce CO₂ release or completely eliminates it in the case of hydrogen. However, the on-board storage of methane and hydrogen for automotive applications remains a great challenge. With these considerations in mind, our research goals in this dissertation focus on the systematic design and synthesis of N-rich POPs and their use in small gas (H₂ and CH₄) storage as well as selective CO₂ capture from gas mixtures. In particular, we have studied the effect of integrating pyrene and triazine building units into benzimidazole-linked polymers (BILPs) and covalent organic frameworks (COFs) on gas storage and separation. We have found that pyrene-based BILPs exhibit remarkable selective CO₂ capturing capacities under industrial settings (VAS, PSA). However the methane and hydrogen storage capacities of BILPs were found to be only modest especially at high pressure due to their moderate surface area and pore volume. We addressed these limitations by the synthesis of a highly porous imine-linked COF (ILCOF-1), which has very high surface area and improved hydrogen and methane uptakes when compared to BILPs. We have demonstrated that the use of pyrene in BILPs and COFs can direct frameworks growth through - stacking and improve porosity and pore volume whereas the use of triazine is instrumental in improving the binding affinity of the frameworks towards CO₂. Advisors/Committee Members: Hani M. El-Kaderi.

Subjects/Keywords: Porous Polymers; Nanoporous Materials; Gas Separation; Gas Storage; CO2 capture

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APA (6^th Edition):

Sekizkardes, Ali Kemal, P. (2014). Pyrene-Derived Porous Organic Polymers: Design, Synthesis, and Application to Gas Storage and Separation. (Doctoral Dissertation). Virginia Commonwealth University. Retrieved from https://doi.org/10.25772/Z2TC-Q798 ; https://scholarscompass.vcu.edu/etd/3649

Chicago Manual of Style (16^th Edition):

Sekizkardes, Ali Kemal, PhD. “Pyrene-Derived Porous Organic Polymers: Design, Synthesis, and Application to Gas Storage and Separation.” 2014. Doctoral Dissertation, Virginia Commonwealth University. Accessed March 04, 2021. https://doi.org/10.25772/Z2TC-Q798 ; https://scholarscompass.vcu.edu/etd/3649.

MLA Handbook (7^th Edition):

Sekizkardes, Ali Kemal, PhD. “Pyrene-Derived Porous Organic Polymers: Design, Synthesis, and Application to Gas Storage and Separation.” 2014. Web. 04 Mar 2021.

Vancouver:

Sekizkardes, Ali Kemal P. Pyrene-Derived Porous Organic Polymers: Design, Synthesis, and Application to Gas Storage and Separation. [Internet] [Doctoral dissertation]. Virginia Commonwealth University; 2014. [cited 2021 Mar 04]. Available from: https://doi.org/10.25772/Z2TC-Q798 ; https://scholarscompass.vcu.edu/etd/3649.

Council of Science Editors:

Sekizkardes, Ali Kemal P. Pyrene-Derived Porous Organic Polymers: Design, Synthesis, and Application to Gas Storage and Separation. [Doctoral Dissertation]. Virginia Commonwealth University; 2014. Available from: https://doi.org/10.25772/Z2TC-Q798 ; https://scholarscompass.vcu.edu/etd/3649

University of Surrey

29. Zone, Ian Robert. Dynamics and control of a pressure swing adsorption process.

Degree: PhD, 1998, University of Surrey

URL: http://epubs.surrey.ac.uk/762/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298924

Subjects/Keywords: 660; Gas separation; Gas purification

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APA (6^th Edition):

Zone, I. R. (1998). Dynamics and control of a pressure swing adsorption process. (Doctoral Dissertation). University of Surrey. Retrieved from http://epubs.surrey.ac.uk/762/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298924

Chicago Manual of Style (16^th Edition):

Zone, Ian Robert. “Dynamics and control of a pressure swing adsorption process.” 1998. Doctoral Dissertation, University of Surrey. Accessed March 04, 2021. http://epubs.surrey.ac.uk/762/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298924.

MLA Handbook (7^th Edition):

Zone, Ian Robert. “Dynamics and control of a pressure swing adsorption process.” 1998. Web. 04 Mar 2021.

Vancouver:

Zone IR. Dynamics and control of a pressure swing adsorption process. [Internet] [Doctoral dissertation]. University of Surrey; 1998. [cited 2021 Mar 04]. Available from: http://epubs.surrey.ac.uk/762/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298924.

Council of Science Editors:

Zone IR. Dynamics and control of a pressure swing adsorption process. [Doctoral Dissertation]. University of Surrey; 1998. Available from: http://epubs.surrey.ac.uk/762/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298924

Colorado School of Mines

30. Khan, Muhammad N. Phase equilibria modeling of inhibited gas hydrate systems including salts: applications in flow assurance, seawater desalination and gas separation.

Degree: PhD, Chemical and Biological Engineering, 2016, Colorado School of Mines

URL: http://hdl.handle.net/11124/170013

► Accurate hydrate phase equilibria and vapor-liquid equilibria predictions are critical to the safe and economic design of flow assurance, gas processing, and seawater desalination technologies.… (more)

▼ Accurate hydrate phase equilibria and vapor-liquid equilibria predictions are critical to the safe and economic design of flow assurance, gas processing, and seawater desalination technologies. Inaccurate predictions of vapor-liquid equilibria can also lead to erroneous hydrate phase equilibria predictions. Hydrate phase equilibria predictions typically use the classical van der Waals and Platteeuw (vdWP) model based on statistical thermodynamics, with some modifications (e.g. CSMGem, with Gibbs Energy Minimization). In this thesis work, the vdWP model with Gibbs Energy Minimization algorithm was developed in Matlab. The developed algorithm was evaluated by first investigating the effect of hydrogen (H2) concentration on the phase equilibria of sH hydrate (i.e. H2O+CH4+H2+methylcyclohexane (MCH) quaternary systems). The predictions were shown to be in close agreement with experimental phase equilibria measurements. Cage occupancies of methane and hydrogen in sH hydrate were predicted to increase with increasing pressure, and the extent of occupation was found to be dependent on the methane: hydrogen ratio in the feed gas. Current hydrate phase equilibria predictions (using different models, e.g. CSMGem, Multiflash and PVTsim) for inhibited systems in subsea pipelines (with salts, e.g. NaCl, KCl, CaCl2, also thermodynamic hydrate inhibitors (THIs), e.g. methanol, monoethylene glycol) exhibit large errors. The unavailability of phase equilibria data and absence of an association equation of state in CSMGem leads to problems in predicting the phase equilibria of associating fluids and inhibited systems. Therefore, the current CSMGem model is not reliable for predicting these inhibited systems. Such thermodynamic calculations are critical to flow assurance and desalination process design. To overcome these limitations this work revisited the fluid model and a new fluid model is proposed for phase equilibria predictions; an association equation of state has been developed and applied to predict fluid phase properties for a wide range of hydrocarbons (low to high MWt), polar components and electrolytes (salts). Five parameters of the association equation of state were determined for the associating components by simultaneous minimization of absolute errors in saturated liquid densities and vapor pressures, with comparisons to experimental data. In order to predict the phase equilibria of gas hydrates without inhibitors, the proposed association equation of state needs to be tuned with vapor-liquid equilibria. In this thesis work experimental hydrate phase equilibria and vapor-liquid equilibria data (over a range of temperature, pressure and composition) were collated and utilized to tune the fluid and hydrate models. Binary interaction parameters were optimized for a range of hydrate formers, including methane, ethane, nitrogen and hydrogen in combination with all other available hydrocarbons. Different equations of state were also used to predict the vapor-liquid equilibria for mixtures of methane, ethane, nitrogen and… Advisors/Committee Members: Koh, Carolyn A. (Carolyn Ann) (advisor), Peters, Cor J. (advisor), Zerpa, Luis E. (committee member), Way, J. Douglas (committee member), Krebs, Melissa D. (committee member).

Subjects/Keywords: desalination; electrolyte; gas hydrates; gas separation; MSA; phase equilibria

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Khan, M. N. (2016). Phase equilibria modeling of inhibited gas hydrate systems including salts: applications in flow assurance, seawater desalination and gas separation. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/170013

Chicago Manual of Style (16^th Edition):

Khan, Muhammad N. “Phase equilibria modeling of inhibited gas hydrate systems including salts: applications in flow assurance, seawater desalination and gas separation.” 2016. Doctoral Dissertation, Colorado School of Mines. Accessed March 04, 2021. http://hdl.handle.net/11124/170013.

MLA Handbook (7^th Edition):

Khan, Muhammad N. “Phase equilibria modeling of inhibited gas hydrate systems including salts: applications in flow assurance, seawater desalination and gas separation.” 2016. Web. 04 Mar 2021.

Vancouver:

Khan MN. Phase equilibria modeling of inhibited gas hydrate systems including salts: applications in flow assurance, seawater desalination and gas separation. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11124/170013.

Council of Science Editors:

Khan MN. Phase equilibria modeling of inhibited gas hydrate systems including salts: applications in flow assurance, seawater desalination and gas separation. [Doctoral Dissertation]. Colorado School of Mines; 2016. Available from: http://hdl.handle.net/11124/170013

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Open Access Theses and Dissertations