subject:(IRMOF)

1. Hicks, Jason. Theoretical Studies Of Oxides Relevant To The Combustion Of Fossil Fuels.

Degree: MS, Chemistry, 2013, University of North Dakota

URL: https://commons.und.edu/theses/1544

► Anthropogenic pollution has greatly increased since the industrial revolution and continues to increase as more of the world becomes dependent upon fossil fuels for… (more)

▼ Anthropogenic pollution has greatly increased since the industrial revolution and continues to increase as more of the world becomes dependent upon fossil fuels for important applications like transportation and power production. In a general case, whenever a fossil fuel is consumed, a primary product of a complete combustion reaction is carbon dioxide. In a more specific case, the collection, processing and combustion of coal for power production are one of the primary ways by which trace elements, such as arsenic and selenium, are released into the environment. All of these pollutants are known to have harmful effects, whether on the environment, human health or power production itself. Because of this there has been an increasing interest in studies related to combating these pollutants. Concerning CO₂ emissions, recently there has been a significant amount of work related to CO₂ capture. A promising method involves the encapsulation of CO₂ into isoreticular metal-organic frameworks (IRMOFs). The effectiveness of IMROFs greatly depends on the choice of both metal and organic parts. Molecular simulations have been used in the past to aid in the design and characterization of new MOFs, in particular by generating an adsorption isotherm. However, these traditional simulation methods have several drawbacks. The method used in this thesis, namely expanded Wang-Landau, not only overcomes these drawbacks but provides access to all the thermodynamic properties relevant to the adsorption process through a solution thermodynamics approach. This is greatly beneficial, since an excellent way to characterize the performance of various MOFs is by comparing their desorption free energy, i.e., the energy it takes to regenerate a saturated MOF to prepare it for the next adsorption cycle. Expanded WL was used in the study of CO₂ adsorption into IRMOF-1, 8 and 10 at eight temperatures, spanning both the subcritical and supercritical regimes and the following were obtained: adsorption isotherms, Gibbs free energy, enthalpy, entropy and desorption free energy. It was found that, when the maximum loading was compared to the regeneration costs, IRMOF-10 had the best performance, followed by IRMOF-8 then IRMOF-1. During the combustion of coal, not only is CO₂ produced, but also the trace elements of arsenic and selenium escape into the environment though this process. Both arsenic and selenium are known to have a harmful effects on the environment and human health. Arsenic is also known to poison the catalytic converter used in selective catalytic reduction of NO_x. These trace elements have been found on fly ash or in the hot flue gases released into the atmosphere. In flue gases they most often exist as oxides. There have been many experimental and a few theoretical studies on the monomeric oxides, AsO_x and SeO_x, where x = 1, 2, or 3. However, little is known concerning the corresponding… Advisors/Committee Members: Jerome Delhommelle, Mark R. Hoffmann.

Subjects/Keywords: arsenic oxide; carbon dioxide; Expanded Wang-Landau; GVVPT2; IRMOF; selenium oxide

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Hicks, J. (2013). Theoretical Studies Of Oxides Relevant To The Combustion Of Fossil Fuels. (Masters Thesis). University of North Dakota. Retrieved from https://commons.und.edu/theses/1544

Chicago Manual of Style (16^th Edition):

Hicks, Jason. “Theoretical Studies Of Oxides Relevant To The Combustion Of Fossil Fuels.” 2013. Masters Thesis, University of North Dakota. Accessed April 14, 2021. https://commons.und.edu/theses/1544.

MLA Handbook (7^th Edition):

Hicks, Jason. “Theoretical Studies Of Oxides Relevant To The Combustion Of Fossil Fuels.” 2013. Web. 14 Apr 2021.

Vancouver:

Hicks J. Theoretical Studies Of Oxides Relevant To The Combustion Of Fossil Fuels. [Internet] [Masters thesis]. University of North Dakota; 2013. [cited 2021 Apr 14]. Available from: https://commons.und.edu/theses/1544.

Council of Science Editors:

Hicks J. Theoretical Studies Of Oxides Relevant To The Combustion Of Fossil Fuels. [Masters Thesis]. University of North Dakota; 2013. Available from: https://commons.und.edu/theses/1544

2. Yoo, Yeonshick. Synthesis and Characterization of Iso-Reticular Metal-Organic Frameworks and Their Applications for Gas Separations.

Degree: PhD, Chemical Engineering, 2011, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8531

► Nanoporous metal-organic frameworks (MOFs) have attracted tremendous interest due to their potential applications in gas-storage, gas separation, gas sensing, and catalysis. MOFs consist of metal-oxygen… (more)

▼ Nanoporous metal-organic frameworks (MOFs) have attracted tremendous interest due to their potential applications in gas-storage, gas separation, gas sensing, and catalysis. MOFs consist of metal-oxygen polyhedera interconnected with a variety of organic linker molecules, resulting in tailored nanoporous materials. With a judicious choice of organic linker groups, it is possible to fine-tune size, shape, and chemical functionality of the cavities and the internal surfaces. This unique structural feature offers unprecedented opportunities in small-molecule separations as well as chiral separations and catalysis. Prototypical iso-reticular metal-organic frameworks (IRMOFs) have been extensively studied among MOFs due to the simplicity of their synthesis and the variety of their potential applications. IRMOFs are a specific series of metal-organic frameworks developed by Yaghi and his coworkers. All IRMOFs are composed of oxygen-centered Zn4O tetrahedra interconnected with dicarboxylate linkers, forming a cubic type three dimensional (3D) porous network with high surface area. Despite a great deal of research in the synthesis and characterization of MOFs, there have been relatively few reports on the development of their applications, such as the fabrication of MOF thin films and membranes for gas separations. This is mainly due to the challenges associated with relatively difficult heterogeneous nucleation (seeding) and growth of MOFs on supports, and crack formation compared to their counterparts. Thin films and membranes of MOFs have great potentials for applications in membranebased gas separations, reactors, chemical sensors, and nonlinear optical devices. In this dissertation, the fabrication of IRMOF-1 membrane using a novel seeding method and its gas diffusion properties has been demonstrated. Introduction of the new seeding method for MOFs using microwaves resulted in well inter-grown IRMOF membranes showing Knudsen type transport of small gases through its pore. The heteroepitaxial growth of one IRMOF on another produced multi-layered IRMOF membranes. In addition, postsynthetic modification (PSM) of IRMOFs created functionalized membranes with enhanced stability against water as well as reduced crack formation during membrane fabrication. Lastly, hierarchical IRMOFs with improved CO2 adsorption properties were synthesized via PSM with cyanuric chloride. Advisors/Committee Members: Jeong, Hae-Kwon (advisor), Clearfield, Abraham (committee member), Shantz, Daniel F. (committee member), Cagin, Tahir (committee member).

Subjects/Keywords: IRMOF; membrane; gas separation; CO2

…122 124 127 143 FABRICATION OF CRACK-FREE IRMOF-3 MEMBRANE VIA SURFACTANT MODIFIED DRYING… …144 145 147 155 SELECTIVELY ETCHED HIERARCHICAL IRMOF-3 AND ITS CO2 ADSORPTION PROPERTIES… …28 2-9 Illustration of postsynthetic modification of IRMOF-3 with various anhydrides… …Schematic illustration of the heteroepitaxially grown hybrid IRMOF[email protected] and the crystal structures… …of IRMOF-1 and IRMOF-3. ...................................... 128 6-2 X-ray diffractions…

2 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Yoo, Y. (2011). Synthesis and Characterization of Iso-Reticular Metal-Organic Frameworks and Their Applications for Gas Separations. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8531

Chicago Manual of Style (16^th Edition):

Yoo, Yeonshick. “Synthesis and Characterization of Iso-Reticular Metal-Organic Frameworks and Their Applications for Gas Separations.” 2011. Doctoral Dissertation, Texas A&M University. Accessed April 14, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8531.

MLA Handbook (7^th Edition):

Yoo, Yeonshick. “Synthesis and Characterization of Iso-Reticular Metal-Organic Frameworks and Their Applications for Gas Separations.” 2011. Web. 14 Apr 2021.

Vancouver:

Yoo Y. Synthesis and Characterization of Iso-Reticular Metal-Organic Frameworks and Their Applications for Gas Separations. [Internet] [Doctoral dissertation]. Texas A&M University; 2011. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8531.

Council of Science Editors:

Yoo Y. Synthesis and Characterization of Iso-Reticular Metal-Organic Frameworks and Their Applications for Gas Separations. [Doctoral Dissertation]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8531

3. Soares Leite, Elisa. Simulação de redes porosas metal-orgânicas usadas no armazenamento de gás natural.

Degree: 2007, Universidade Federal de Pernambuco

URL: https://repositorio.ufpe.br/handle/123456789/9619

► O gás natural é principalmente armazenado em cilindros por sua compressão em altas pressões (205 atm). Esta pressão pode ser significativamente diminuída pelo armazenamento deste… (more)

Subjects/Keywords: GÁS NATURAL; IRMOF; DIFUSÃO; ISOTERMA DE ADSORÇÃO

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Soares Leite, E. (2007). Simulação de redes porosas metal-orgânicas usadas no armazenamento de gás natural. (Doctoral Dissertation). Universidade Federal de Pernambuco. Retrieved from https://repositorio.ufpe.br/handle/123456789/9619

Chicago Manual of Style (16^th Edition):

Soares Leite, Elisa. “Simulação de redes porosas metal-orgânicas usadas no armazenamento de gás natural.” 2007. Doctoral Dissertation, Universidade Federal de Pernambuco. Accessed April 14, 2021. https://repositorio.ufpe.br/handle/123456789/9619.

MLA Handbook (7^th Edition):

Soares Leite, Elisa. “Simulação de redes porosas metal-orgânicas usadas no armazenamento de gás natural.” 2007. Web. 14 Apr 2021.

Vancouver:

Soares Leite E. Simulação de redes porosas metal-orgânicas usadas no armazenamento de gás natural. [Internet] [Doctoral dissertation]. Universidade Federal de Pernambuco; 2007. [cited 2021 Apr 14]. Available from: https://repositorio.ufpe.br/handle/123456789/9619.

Council of Science Editors:

Soares Leite E. Simulação de redes porosas metal-orgânicas usadas no armazenamento de gás natural. [Doctoral Dissertation]. Universidade Federal de Pernambuco; 2007. Available from: https://repositorio.ufpe.br/handle/123456789/9619

4. CASTILLO GOMEZ, LAURA ANDREA. Síntesis y modificaciones post-sintéticas covalentes del compuesto isoreticular metal-orgánico IRMOF-3 .

Degree: 2015, Universidad de los Andes

URL: https://documentodegrado.uniandes.edu.co/documentos/7184.pdf

► En este proyecto se realizó la síntesis del compuesto metal-orgánico IRMOF-3 por vía solvotérmica. Los cristales cafés obtenidos fueron caracterizados, corroborando la celda cúbica esperada,… (more)

Subjects/Keywords: IRMOF-3; síntesis solvotérmica; modificación post-sintética; base de Schiff.

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

CASTILLO GOMEZ, L. A. (2015). Síntesis y modificaciones post-sintéticas covalentes del compuesto isoreticular metal-orgánico IRMOF-3 . (Thesis). Universidad de los Andes. Retrieved from https://documentodegrado.uniandes.edu.co/documentos/7184.pdf

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):

CASTILLO GOMEZ, LAURA ANDREA. “Síntesis y modificaciones post-sintéticas covalentes del compuesto isoreticular metal-orgánico IRMOF-3 .” 2015. Thesis, Universidad de los Andes. Accessed April 14, 2021. https://documentodegrado.uniandes.edu.co/documentos/7184.pdf.

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

MLA Handbook (7^th Edition):

CASTILLO GOMEZ, LAURA ANDREA. “Síntesis y modificaciones post-sintéticas covalentes del compuesto isoreticular metal-orgánico IRMOF-3 .” 2015. Web. 14 Apr 2021.

Vancouver:

CASTILLO GOMEZ LA. Síntesis y modificaciones post-sintéticas covalentes del compuesto isoreticular metal-orgánico IRMOF-3 . [Internet] [Thesis]. Universidad de los Andes; 2015. [cited 2021 Apr 14]. Available from: https://documentodegrado.uniandes.edu.co/documentos/7184.pdf.

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

Council of Science Editors:

CASTILLO GOMEZ LA. Síntesis y modificaciones post-sintéticas covalentes del compuesto isoreticular metal-orgánico IRMOF-3 . [Thesis]. Universidad de los Andes; 2015. Available from: https://documentodegrado.uniandes.edu.co/documentos/7184.pdf

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

5. Sabouni, Rana. Carbon Dioxide Adsorption by Metal Organic Frameworks (Synthesis, Testing and Modeling).

Degree: 2013, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/1472

► It is essential to capture carbon dioxide from flue gas because it is considered one of the main causes of global warming. Several materials and… (more)

▼ It is essential to capture carbon dioxide from flue gas because it is considered one of the main causes of global warming. Several materials and various methods have been reported for the CO2 capturing including adsorption onto zeolites, porous membranes, and absorption in amine solutions. All such methods require high energy input and high cost. New classes of porous materials called Metal Organic Frameworks (MOFs) exhibit excellent performance in capturing carbon dioxide from a gas mixture. In the course of the current research, a novel MOF synthesis method using combined microwave and ultrasound, and microwave only was introduced and successfully applied to synthesize two different MOFs named IRMOF-1 and CPM-5. The scope of the research focuses on: 1) synthesis of two different MOFs (e.g. IRMOF-1 and CPM-5) using innovative non-traditional methods including microwave and ultrasound irradiation, and employing the optimization of three synthesis conditions: synthesis temperature, time and solvent ratio, 2) testing the MOFs for carbon dioxide adsorption to obtain the adsorption properties such as adsorption equilibrium isotherm, CO2 diffusivity coefficient, adsorption kinetics and isosteric heat of adsorption, 3) testing of the best MOF for CO2 adsorption using fixed bed adsorption micro-reactor column configuration at different experimental conditions such as adsorption temperature, feed concentration and feed flowrate, 4) modeling of the breakthrough curve using COMSOL simulation and comparing it with the experimental breakthrough curves. The microwave irradiations drastically reduce the synthesis time of CPM-5 samples from 5 days using a traditional method (e.g. conventional oven) to 10 min. The outcome of the research indicated that the IRMOF-1 and CPM-5 samples synthesized using the novel synthesis methods exhibit unique properties compared to traditional synthesis method. The improved properties of the final product such as: lower particle size and narrower size distribution, more constructed crystallites, high surface area, high CO2 adsorption isotherm capacity (e.g. 2.3 mmol CO2/ g) , high selectivity factor of CO2 over N2 ( e.g 16.1 at 298 K), low isosteric heat of adsorption, and a high CO2 dynamic adsorption capacity (e.g. 11.9 wt. % at 298 K), were noted. As a result the microwave synthesized CPM-5 samples can be considered as an attractive adsorbent for the separation of CO2 from flue gas.

Subjects/Keywords: microwave and ultrasound synthesis; IRMOF-1 and CPM-5; adsorption isotherms; breakthrough curves; fixed bed column reactor; COMSOL modeling; Other Chemical Engineering

…58 3 A Novel Combined Manufacturing Technique for Rapid Production of IRMOF-1 Using… …78 Table ‎ 3-2: Comparison of various preparation methods of IRMOF-1… …44 Figure ‎ 3-1 : XRD patterns for IRMOF-1 samples… …85 Figure ‎ 3-3: FTIR spectra of IRMOF-1 samples… …86 Figure 3 ‎ -4: Thermogravimetric analysis results for IRMOF-1 samples, the heating rate…

10 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Sabouni, R. (2013). Carbon Dioxide Adsorption by Metal Organic Frameworks (Synthesis, Testing and Modeling). (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/1472

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):

Sabouni, Rana. “Carbon Dioxide Adsorption by Metal Organic Frameworks (Synthesis, Testing and Modeling).” 2013. Thesis, University of Western Ontario. Accessed April 14, 2021. https://ir.lib.uwo.ca/etd/1472.

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

MLA Handbook (7^th Edition):

Sabouni, Rana. “Carbon Dioxide Adsorption by Metal Organic Frameworks (Synthesis, Testing and Modeling).” 2013. Web. 14 Apr 2021.

Vancouver:

Sabouni R. Carbon Dioxide Adsorption by Metal Organic Frameworks (Synthesis, Testing and Modeling). [Internet] [Thesis]. University of Western Ontario; 2013. [cited 2021 Apr 14]. Available from: https://ir.lib.uwo.ca/etd/1472.

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

Council of Science Editors:

Sabouni R. Carbon Dioxide Adsorption by Metal Organic Frameworks (Synthesis, Testing and Modeling). [Thesis]. University of Western Ontario; 2013. Available from: https://ir.lib.uwo.ca/etd/1472

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

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations