subject:(Manganese catalysts)

Rutgers University

1. Smith, Paul F., 1988-. On the active sites and mechanisms of cobalt and manganese water oxidation catalysts.

Degree: PhD, Chemistry and Chemical Biology, 2015, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/48666/

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The “holy grail” of renewable, sustainable energy is artificial replication of the only natural process capable of storing sun energy into chemical bonds: Photosynthesis. The… (more)

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The “holy grail” of renewable, sustainable energy is artificial replication of the only natural process capable of storing sun energy into chemical bonds: Photosynthesis. The oxidation of water to molecular O2 is the thermodynamic bottleneck to this process. As such, viable catalysts for water oxidation are warranted. These materials ideally 1) are constructed of abundant elements (e.g., first row transition metals) and thus affordable, 2) operate efficiently and effectively with little applied bias (overpotential), and 3) maintain high activity for useful lifetimes. In Chapter 1, Nature’s CaMn4O5 “heterocubane” catalyst is introduced. Principles of this structure which must translate into artificial catalysts are discussed: O-O bond formation, sacrificing oxidizing strength for long lifetimes, and effective storage of oxidizing equivalents via proton-coupled electron transfer (expanded in Chapter 5). In Chapters 2-3, this thesis addresses the reactivity of cobalt based catalysts. Crystalline and amorphous cobalt oxides are well-known oxygen evolving catalysts, but up to three different mechanisms are proposed to occur on their surfaces. While the “cubane” topology is stressed as biomimetic, these mechanisms commonly only feature a single metal active site- seemingly negating the cubane topology as necessary for catalysis. The results in these chapters- via studies on discrete Co2O2, Co3O3 and Co4O4 clusters- demonstrate that the cubane topology optimally stabilizes the Co4+ oxidation state via delocalization across all metal centers. This stored oxidizing equivalent reacts with terminally bound OH- sites and facilitates oxidation fully to O2. In Chapter 4, this thesis addresses the reactivity of manganese-based catalysts. Paradoxical observations are known: Nature’s effectiveness at utilizing Mn have predominantly translated into poor artificial Mn catalysts. While partially explained by the ~30 possible structures of Mn-oxides (many of which are minerals), promising results have correlated activity with stabilization of Mn3+, as opposed to Mn4+. The studies shown here rationalize these paradoxes by comparing structural polytypes of Mn3+, clearly demonstrating that corner-sharing, labile Mn3+ centers capable of facile water binding correlate with catalytic activity as found in both layered and tunnel Mn oxides. Conversely, Mn of any oxidation state in strongly coupled structures are effective at storing charge but not transferring it to water.

Advisors/Committee Members: Dismukes, Charles (chair).

Subjects/Keywords: Catalysts; Cobalt; Manganese catalysts

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APA (6^th Edition):

Smith, Paul F., 1. (2015). On the active sites and mechanisms of cobalt and manganese water oxidation catalysts. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/48666/

Chicago Manual of Style (16^th Edition):

Smith, Paul F., 1988-. “On the active sites and mechanisms of cobalt and manganese water oxidation catalysts.” 2015. Doctoral Dissertation, Rutgers University. Accessed January 20, 2021. https://rucore.libraries.rutgers.edu/rutgers-lib/48666/.

MLA Handbook (7^th Edition):

Smith, Paul F., 1988-. “On the active sites and mechanisms of cobalt and manganese water oxidation catalysts.” 2015. Web. 20 Jan 2021.

Vancouver:

Smith, Paul F. 1. On the active sites and mechanisms of cobalt and manganese water oxidation catalysts. [Internet] [Doctoral dissertation]. Rutgers University; 2015. [cited 2021 Jan 20]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/48666/.

Council of Science Editors:

Smith, Paul F. 1. On the active sites and mechanisms of cobalt and manganese water oxidation catalysts. [Doctoral Dissertation]. Rutgers University; 2015. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/48666/

University of Georgia

2. Vandezande, Jonathon Eric. Design of ligands for CO2 catalysis.

Degree: 2018, University of Georgia

URL: http://hdl.handle.net/10724/37205

► Reducing the atmospheric CO2 concentration is of utmost importance to in mitigating global climate change. The conversion of CO2 to industrially relevant products will serve… (more)

Subjects/Keywords: carbon dioxide conversion; manganese catalysts; rhenium catalysts; electrochemical catalysis; density functional theory; catalytic mechanisms

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APA (6^th Edition):

Vandezande, J. E. (2018). Design of ligands for CO2 catalysis. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/37205

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):

Vandezande, Jonathon Eric. “Design of ligands for CO2 catalysis.” 2018. Thesis, University of Georgia. Accessed January 20, 2021. http://hdl.handle.net/10724/37205.

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

MLA Handbook (7^th Edition):

Vandezande, Jonathon Eric. “Design of ligands for CO2 catalysis.” 2018. Web. 20 Jan 2021.

Vancouver:

Vandezande JE. Design of ligands for CO2 catalysis. [Internet] [Thesis]. University of Georgia; 2018. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10724/37205.

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

Council of Science Editors:

Vandezande JE. Design of ligands for CO2 catalysis. [Thesis]. University of Georgia; 2018. Available from: http://hdl.handle.net/10724/37205

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

University of Georgia

3. Vandezande, Jonathon Eric. Design of ligands for CO2 catalysis.

Degree: 2018, University of Georgia

URL: http://hdl.handle.net/10724/37048

► Reducing the atmospheric CO2 concentration is of utmost importance to in mitigating global climate change. The conversion of CO2 to industrially relevant products will serve… (more)

Subjects/Keywords: carbon dioxide conversion; manganese catalysts; rhenium catalysts; electrochemical catalysis; density functional theory; catalytic mechanisms

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

APA (6^th Edition):

Vandezande, J. E. (2018). Design of ligands for CO2 catalysis. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/37048

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):

Vandezande, Jonathon Eric. “Design of ligands for CO2 catalysis.” 2018. Thesis, University of Georgia. Accessed January 20, 2021. http://hdl.handle.net/10724/37048.

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

MLA Handbook (7^th Edition):

Vandezande, Jonathon Eric. “Design of ligands for CO2 catalysis.” 2018. Web. 20 Jan 2021.

Vancouver:

Vandezande JE. Design of ligands for CO2 catalysis. [Internet] [Thesis]. University of Georgia; 2018. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10724/37048.

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

Council of Science Editors:

Vandezande JE. Design of ligands for CO2 catalysis. [Thesis]. University of Georgia; 2018. Available from: http://hdl.handle.net/10724/37048

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

4. Rolle, Clarence J. Selective aerobic oxidations catalyzed by manganese(III) complexes using redox-active ligands.

Degree: PhD, Chemistry and Biochemistry, 2011, Georgia Tech

URL: http://hdl.handle.net/1853/42827

► Selective oxidations are important for the functionalization of compounds in organic synthesis and chemical industry. Using O2 as a terminal e- acceptor would be ideal… (more)

Subjects/Keywords: Oxidation chemistry; Metal catalysts; Metalloenzymes; Manganese; Manganese catalysts; Oxidases; Oxidation

…development of new manganese-based catalysts for selective aerobic oxidation of organic substrates… …These catalysts employ redox-active ligands to accomplish multielectron O2 reduction, which is… …reservoir of electrons for net multielectron reaction chemistry at the manganese center. In the… …extrude 1 equiv of alcohol and 1 equiv of aldehyde. I have shown that this manganese complex is… …x29;2]– as a catalyst. xvi Manganese(III) complexes with redox active…

10 more images…

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

APA (6^th Edition):

Rolle, C. J. (2011). Selective aerobic oxidations catalyzed by manganese(III) complexes using redox-active ligands. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/42827

Chicago Manual of Style (16^th Edition):

Rolle, Clarence J. “Selective aerobic oxidations catalyzed by manganese(III) complexes using redox-active ligands.” 2011. Doctoral Dissertation, Georgia Tech. Accessed January 20, 2021. http://hdl.handle.net/1853/42827.

MLA Handbook (7^th Edition):

Rolle, Clarence J. “Selective aerobic oxidations catalyzed by manganese(III) complexes using redox-active ligands.” 2011. Web. 20 Jan 2021.

Vancouver:

Rolle CJ. Selective aerobic oxidations catalyzed by manganese(III) complexes using redox-active ligands. [Internet] [Doctoral dissertation]. Georgia Tech; 2011. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1853/42827.

Council of Science Editors:

Rolle CJ. Selective aerobic oxidations catalyzed by manganese(III) complexes using redox-active ligands. [Doctoral Dissertation]. Georgia Tech; 2011. Available from: http://hdl.handle.net/1853/42827

5. Rekha M. Manganese oxide/porous support catalysts for organic transformations - investigation of their structure activity relationship.

Degree: Chemistry, 2013, Manipal University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/13077

Included

Reference included in chapters

Advisors/Committee Members: Nagaraju N.

Subjects/Keywords: Chemistry; Manganese oxide; Porous support catalysts; Organic transformations

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

APA (6^th Edition):

M, R. (2013). Manganese oxide/porous support catalysts for organic transformations - investigation of their structure activity relationship. (Thesis). Manipal University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/13077

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):

M, Rekha. “Manganese oxide/porous support catalysts for organic transformations - investigation of their structure activity relationship.” 2013. Thesis, Manipal University. Accessed January 20, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/13077.

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

MLA Handbook (7^th Edition):

M, Rekha. “Manganese oxide/porous support catalysts for organic transformations - investigation of their structure activity relationship.” 2013. Web. 20 Jan 2021.

Vancouver:

M R. Manganese oxide/porous support catalysts for organic transformations - investigation of their structure activity relationship. [Internet] [Thesis]. Manipal University; 2013. [cited 2021 Jan 20]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13077.

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

Council of Science Editors:

M R. Manganese oxide/porous support catalysts for organic transformations - investigation of their structure activity relationship. [Thesis]. Manipal University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13077

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

6. Schmit, France. Catalyseurs à base d’oxyde de manganèse pour l’oxydation en voie humide catalytique de la méthylamine : Manganese-based oxides catalysts for the catalytic wet air oxidation of methylamine-containing aqueous effluent.

Degree: Docteur es, Chimie, 2014, Université Claude Bernard – Lyon I

URL: http://www.theses.fr/2014LYO10211

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Des catalyseurs hétérogènes à base d'oxydes de manganèse associés aux dioxydes de titane, zirconium et cérium (Mn-Ti-O, Mn-Zr-O et Mn-Ce-O) ont été préparés par différentes… (more)

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Des catalyseurs hétérogènes à base d'oxydes de manganèse associés aux dioxydes de titane, zirconium et cérium (Mn-Ti-O, Mn-Zr-O et Mn-Ce-O) ont été préparés par différentes voies de synthèse et évalués dans l'Oxydation en Voie Humide Catalytique (OVHC) de la méthylamine. Diverses voies de synthèse ont été explorées pour la préparation de ces catalyseurs, notamment une voie sol-gel mettant en oeuvre des copolymères à bloc, une voie de nanomoulage dans des moules de silice mésoporeuse et une voie solvothermale. L'insertion du manganèse a été réalisée de deux manières : soit ab initio dès le début de la synthèse, soit a posteriori par imprégnation d'un support préalablement formé avec un précurseur de manganèse. Des oxydes mixtes mésoporeux ou des oxydes de manganèse supportés sur des oxydes mésoporeux de Ti, Zr et Ce ont été réalisés. Si la texture de ces matériaux est relativement préservée, d'importantes ségrégations du manganèse ont parfois été observées après réaction. Ces catalyseurs ont été évalués dans l'OVHC de la méthylamine, une molécule organique azotée prise pour modèle. Ils sont tous actifs dans la dégradation de la méthylamine. Toutefois, ceux associant le manganèse au cérium sont les plus performants, devant les matériaux manganèse-zirconium et manganèse-titane. Deux voies de dégradation de la méthylamine ont été mises en évidence. Quel que soit le catalyseur, la première voie mène à la formation d'ions NH4 +, HCOO-, NO2 - et NO3 - présents en phase aqueuse. Les ions ammonium et formiates, formés en quantités équimolaires en tout début de réaction, sont des produits primaires de cette réaction. Les ions ammonium sont réfractaires à l'oxydation et s'accumulent dans le milieu réactionnel alors que les ions formiates sont complètement minéralisés en CO2 et H2O en fin de réaction. Nitrites et nitrates sont détectés à l'état de traces. La deuxième voie conduit directement et très majoritairement à N2 et CO2, sans qu'aucun autre composé ne soit détecté intermédiairement en phase liquide. Cette dernière voie peut représenter jusqu'à 50% de la dégradation de la méthylamine. En fin de réaction, la totalité de la fraction carbonée de la méthylamine a été minéralisée en CO2 et la sélectivité en diazote atteint jusqu'à 50

Heterogeneous manganese based oxide associated to titanium, zirconium or cerium dioxide catalysts (Mn-Ti-O, Mn-Zr-O and Mn-Ce-O) were prepared using different synthesis route and evaluated in the Catalytic Wet Air Oxidation (CWAO) of methylamine. Various synthesis routes were investigated to prepare the catalysts, especially the sol-gel method using block copolymers, the nano-casting approach in mesoporous silicate templates and the solvothermal synthesis. Introduction of manganese was achieved in two different ways: either ab initio, from the beginning of the synthesis or a posteriori via impregnation of the support with a manganese precursor. If the textural properties of these materials are almost unchanged after reaction, an important segregation of the manganese was sometime observed.…

Advisors/Committee Members: Descorme, Claude (thesis director), Bois, Laurence (thesis director).

Subjects/Keywords: Catalyseurs mésoporeux; Oxydes de manganèse; Oxydation en voie humide catalytique; Mesoporous catalysts; Manganese oxide; Catalytic Wet Air Oxidation; 541.3

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

APA (6^th Edition):

Schmit, F. (2014). Catalyseurs à base d’oxyde de manganèse pour l’oxydation en voie humide catalytique de la méthylamine : Manganese-based oxides catalysts for the catalytic wet air oxidation of methylamine-containing aqueous effluent. (Doctoral Dissertation). Université Claude Bernard – Lyon I. Retrieved from http://www.theses.fr/2014LYO10211

Chicago Manual of Style (16^th Edition):

Schmit, France. “Catalyseurs à base d’oxyde de manganèse pour l’oxydation en voie humide catalytique de la méthylamine : Manganese-based oxides catalysts for the catalytic wet air oxidation of methylamine-containing aqueous effluent.” 2014. Doctoral Dissertation, Université Claude Bernard – Lyon I. Accessed January 20, 2021. http://www.theses.fr/2014LYO10211.

MLA Handbook (7^th Edition):

Schmit, France. “Catalyseurs à base d’oxyde de manganèse pour l’oxydation en voie humide catalytique de la méthylamine : Manganese-based oxides catalysts for the catalytic wet air oxidation of methylamine-containing aqueous effluent.” 2014. Web. 20 Jan 2021.

Vancouver:

Schmit F. Catalyseurs à base d’oxyde de manganèse pour l’oxydation en voie humide catalytique de la méthylamine : Manganese-based oxides catalysts for the catalytic wet air oxidation of methylamine-containing aqueous effluent. [Internet] [Doctoral dissertation]. Université Claude Bernard – Lyon I; 2014. [cited 2021 Jan 20]. Available from: http://www.theses.fr/2014LYO10211.

Council of Science Editors:

Schmit F. Catalyseurs à base d’oxyde de manganèse pour l’oxydation en voie humide catalytique de la méthylamine : Manganese-based oxides catalysts for the catalytic wet air oxidation of methylamine-containing aqueous effluent. [Doctoral Dissertation]. Université Claude Bernard – Lyon I; 2014. Available from: http://www.theses.fr/2014LYO10211

7. Morales Cano, F. Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis.

Degree: 2006, University Utrecht

URL: https://dspace.library.uu.nl/handle/1874/12529 ; URN:NBN:NL:UI:10-1874-12529 ; 1874/12529 ; urn:isbn:9039341893 ; URN:NBN:NL:UI:10-1874-12529 ; https://dspace.library.uu.nl/handle/1874/12529

► Using the Fischer-Tropsch technology high molecular hydrocarbons are synthesized from CO/H2 mixtures through a surface-catalyzed polymerization reaction using Co-based catalysts. This process enables the transformation… (more)

Subjects/Keywords: Fischer-Tropsch; cobalt catalysts; manganese promotion; XAFS; STEM-EELS

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APA (6^th Edition):

Morales Cano, F. (2006). Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis. (Doctoral Dissertation). University Utrecht. Retrieved from https://dspace.library.uu.nl/handle/1874/12529 ; URN:NBN:NL:UI:10-1874-12529 ; 1874/12529 ; urn:isbn:9039341893 ; URN:NBN:NL:UI:10-1874-12529 ; https://dspace.library.uu.nl/handle/1874/12529

Chicago Manual of Style (16^th Edition):

Morales Cano, F. “Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis.” 2006. Doctoral Dissertation, University Utrecht. Accessed January 20, 2021. https://dspace.library.uu.nl/handle/1874/12529 ; URN:NBN:NL:UI:10-1874-12529 ; 1874/12529 ; urn:isbn:9039341893 ; URN:NBN:NL:UI:10-1874-12529 ; https://dspace.library.uu.nl/handle/1874/12529.

MLA Handbook (7^th Edition):

Morales Cano, F. “Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis.” 2006. Web. 20 Jan 2021.

Vancouver:

Morales Cano F. Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis. [Internet] [Doctoral dissertation]. University Utrecht; 2006. [cited 2021 Jan 20]. Available from: https://dspace.library.uu.nl/handle/1874/12529 ; URN:NBN:NL:UI:10-1874-12529 ; 1874/12529 ; urn:isbn:9039341893 ; URN:NBN:NL:UI:10-1874-12529 ; https://dspace.library.uu.nl/handle/1874/12529.

Council of Science Editors:

Morales Cano F. Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis. [Doctoral Dissertation]. University Utrecht; 2006. Available from: https://dspace.library.uu.nl/handle/1874/12529 ; URN:NBN:NL:UI:10-1874-12529 ; 1874/12529 ; urn:isbn:9039341893 ; URN:NBN:NL:UI:10-1874-12529 ; https://dspace.library.uu.nl/handle/1874/12529

Universiteit Utrecht

8. Morales Cano, F. Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis.

Degree: 2006, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/12529

► Using the Fischer-Tropsch technology high molecular hydrocarbons are synthesized from CO/H2 mixtures through a surface-catalyzed polymerization reaction using Co-based catalysts. This process enables the transformation… (more)

Subjects/Keywords: Scheikunde; Fischer-Tropsch; cobalt catalysts; manganese promotion; XAFS; STEM-EELS

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

APA (6^th Edition):

Morales Cano, F. (2006). Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis. (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/12529

Chicago Manual of Style (16^th Edition):

Morales Cano, F. “Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis.” 2006. Doctoral Dissertation, Universiteit Utrecht. Accessed January 20, 2021. http://dspace.library.uu.nl:8080/handle/1874/12529.

MLA Handbook (7^th Edition):

Morales Cano, F. “Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis.” 2006. Web. 20 Jan 2021.

Vancouver:

Morales Cano F. Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis. [Internet] [Doctoral dissertation]. Universiteit Utrecht; 2006. [cited 2021 Jan 20]. Available from: http://dspace.library.uu.nl:8080/handle/1874/12529.

Council of Science Editors:

Morales Cano F. Manganese Promotion in Titania-Supported Cobalt Fischer-Tropsch Catalysis. [Doctoral Dissertation]. Universiteit Utrecht; 2006. Available from: http://dspace.library.uu.nl:8080/handle/1874/12529

9. Frejlich, Sara Walmsley. Estudo das propriedades eletrocatalíticas de óxidos de manganês puros ou modificados com cobre e bismuto para reação de redução de oxigênio em meio alcalino.

Degree: Mestrado, Físico-Química, 2015, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/75/75134/tde-03062015-084506/ ;

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Catalisadores catódicos para aplicação em células a combustível alcalinas (AFCs) baseados em dióxido de manganês, como alternativa aos tradicionais catalisadores baseados em platina foram estudados… (more)

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Catalisadores catódicos para aplicação em células a combustível alcalinas (AFCs) baseados em dióxido de manganês, como alternativa aos tradicionais catalisadores baseados em platina foram estudados no presente trabalho. O principal objetivo foi avaliar a viabilidade do uso de α-MnO2 através do estudo da atividade eletrocatalítica frente à reação de redução de oxigênio (RRO) do referido óxido em comparação com a atividade eletrocatalítica do material de referência baseado em platina, visando minimizar os elevados custos desses catalisadores que tornam muito restrita a comercialização das células a combustível apesar das vantagens comprovadas desse tipo de tecnologia. O uso de α-MnO2 para completa substituição da platina se mostrou viável por apresentar atividade catalítica comparável à da platina, e com a vantagem adicional de ser um material de menor custo devido à sua abundância. Estudos prévios demonstraram que a RRO catalisada pelo dióxido de manganês ocorre preferencialmente por duas vias: redução direta via quatro elétrons, ou redução por dois elétrons com formação de peróxido de hidrogênio como produto final. A redução direta via quatro elétrons é o mecanismo mais comum, seguido na maioria das estruturas cristalográficas, e é o mecanismo de reação de interesse para aplicação em células a combustível, sendo, portanto, o peróxido de hidrogênio um produto indesejável para esse tipo de aplicação. Foram promovidas modificações do referido óxido de manganês (α-MnO2) pela incorporação de metais não nobres (Cu e Bi) para estudar o impacto dessas modificações nas propriedades físico-químicas desses óxidos. Os resultados obtidos demonstraram que a dopagem com Cu não promoveu alterações significativas nas propriedades desses óxidos. Em contrapartida, a dopagem com bismuto promoveu resultados significativos. A incorporação de Bi3+ na estrutura cristalina do α-MnO2 promoveu o aumento da condutividade eletrônica desse óxido, permitindo assim a eliminação do suporte de carbono, ocasionando desse modo, a eliminação quase que total da formação de peróxido de hidrogênio. Dessa maneira, os resultados mostraram que no caso específico desse material dopado, a RRO se dá predominantemente pela redução direta via quatro elétrons. Os resultados apresentados no presente trabalho, demonstraram que a dopagem do α-MnO2 com Bi3+ resulta em um material bastante promissor como catalisador catódico de AFCs.

Cathode catalysts for application in alkaline fuel cells (AFCs) based on manganese dioxide as alternative to traditional platinum-based catalysts were studied in this work. The main objective was to evaluate the feasibility of using α-MnO2 through the study of electrocatalytic activity toward the oxygen reduction reaction (ORR) of said oxide compared to the electrocatalytic activity of platinum-based reference materials, aiming to cheapen the high costs of these catalysts that make very limited the marketing of fuel cells despite the proven benefits of such technology. The use of α-MnO2 as a…

Advisors/Committee Members: Machado, Sergio Antonio Spinola.

Subjects/Keywords: Alkaline Fuel Cells; Atividade eletrocatalítica; Catalisadores catódicos; Cathode catalysts; Células a combustível alcalinas; Dióxido de Manganês; Manganese dioxide; oxygen reduction reaction, Electrocatalytic activity; Reação de redução de oxigênio

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

APA (6^th Edition):

Frejlich, S. W. (2015). Estudo das propriedades eletrocatalíticas de óxidos de manganês puros ou modificados com cobre e bismuto para reação de redução de oxigênio em meio alcalino. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/75/75134/tde-03062015-084506/ ;

Chicago Manual of Style (16^th Edition):

Frejlich, Sara Walmsley. “Estudo das propriedades eletrocatalíticas de óxidos de manganês puros ou modificados com cobre e bismuto para reação de redução de oxigênio em meio alcalino.” 2015. Masters Thesis, University of São Paulo. Accessed January 20, 2021. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-03062015-084506/ ;.

MLA Handbook (7^th Edition):

Frejlich, Sara Walmsley. “Estudo das propriedades eletrocatalíticas de óxidos de manganês puros ou modificados com cobre e bismuto para reação de redução de oxigênio em meio alcalino.” 2015. Web. 20 Jan 2021.

Vancouver:

Frejlich SW. Estudo das propriedades eletrocatalíticas de óxidos de manganês puros ou modificados com cobre e bismuto para reação de redução de oxigênio em meio alcalino. [Internet] [Masters thesis]. University of São Paulo; 2015. [cited 2021 Jan 20]. Available from: http://www.teses.usp.br/teses/disponiveis/75/75134/tde-03062015-084506/ ;.

Council of Science Editors:

Frejlich SW. Estudo das propriedades eletrocatalíticas de óxidos de manganês puros ou modificados com cobre e bismuto para reação de redução de oxigênio em meio alcalino. [Masters Thesis]. University of São Paulo; 2015. Available from: http://www.teses.usp.br/teses/disponiveis/75/75134/tde-03062015-084506/ ;

Georgia Tech

10. Djerdjouri, Nour-Eddine. Hydrogen peroxide delignification in a biomimetic system based on manganese peroxidase.

Degree: PhD, Institute of Paper Science and Technology, 2003, Georgia Tech

URL: http://hdl.handle.net/1853/7024

Subjects/Keywords: Lignin Oxidation; Hydrogen peroxide; Delignification; Manganese; Selectivity; Catalysts; Oxidative bleaching; Biochemical pulping; Analogs

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

APA (6^th Edition):

Djerdjouri, N. (2003). Hydrogen peroxide delignification in a biomimetic system based on manganese peroxidase. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/7024

Chicago Manual of Style (16^th Edition):

Djerdjouri, Nour-Eddine. “Hydrogen peroxide delignification in a biomimetic system based on manganese peroxidase.” 2003. Doctoral Dissertation, Georgia Tech. Accessed January 20, 2021. http://hdl.handle.net/1853/7024.

MLA Handbook (7^th Edition):

Djerdjouri, Nour-Eddine. “Hydrogen peroxide delignification in a biomimetic system based on manganese peroxidase.” 2003. Web. 20 Jan 2021.

Vancouver:

Djerdjouri N. Hydrogen peroxide delignification in a biomimetic system based on manganese peroxidase. [Internet] [Doctoral dissertation]. Georgia Tech; 2003. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1853/7024.

Council of Science Editors:

Djerdjouri N. Hydrogen peroxide delignification in a biomimetic system based on manganese peroxidase. [Doctoral Dissertation]. Georgia Tech; 2003. Available from: http://hdl.handle.net/1853/7024

Virginia Tech

11. Xi, Yan. Ozone Decomposition and Acetone Oxidation on Manganese Oxide Catalysts.

Degree: MS, Chemical Engineering, 2005, Virginia Tech

URL: http://hdl.handle.net/10919/33112

► This thesis describes the preparation and characterization of manganese oxide catalysts and their application in the oxidation of acetone, a typical volatile organic compound (VOC),… (more)

Subjects/Keywords: Manganese oxide catalysts; VOCs; ozone; acetone; foam; X-ray absorption spectroscopy

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

APA (6^th Edition):

Xi, Y. (2005). Ozone Decomposition and Acetone Oxidation on Manganese Oxide Catalysts. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/33112

Chicago Manual of Style (16^th Edition):

Xi, Yan. “Ozone Decomposition and Acetone Oxidation on Manganese Oxide Catalysts.” 2005. Masters Thesis, Virginia Tech. Accessed January 20, 2021. http://hdl.handle.net/10919/33112.

MLA Handbook (7^th Edition):

Xi, Yan. “Ozone Decomposition and Acetone Oxidation on Manganese Oxide Catalysts.” 2005. Web. 20 Jan 2021.

Vancouver:

Xi Y. Ozone Decomposition and Acetone Oxidation on Manganese Oxide Catalysts. [Internet] [Masters thesis]. Virginia Tech; 2005. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10919/33112.

Council of Science Editors:

Xi Y. Ozone Decomposition and Acetone Oxidation on Manganese Oxide Catalysts. [Masters Thesis]. Virginia Tech; 2005. Available from: http://hdl.handle.net/10919/33112

Arizona State University

12. Mukhopadhyay, Tufan Kumar. Development of Homogeneous Manganese and Iron Catalysts for Organic Transformations and Renewable Fuel Production.

Degree: Chemistry, 2016, Arizona State University

URL: http://repository.asu.edu/items/39403

Subjects/Keywords: Inorganic chemistry; Catalysis; Hydrosilylation; Manganese Catalysts; Organometallic Chemistry; Redox Non-innocent Ligands

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APA (6^th Edition):

Mukhopadhyay, T. K. (2016). Development of Homogeneous Manganese and Iron Catalysts for Organic Transformations and Renewable Fuel Production. (Doctoral Dissertation). Arizona State University. Retrieved from http://repository.asu.edu/items/39403

Chicago Manual of Style (16^th Edition):

Mukhopadhyay, Tufan Kumar. “Development of Homogeneous Manganese and Iron Catalysts for Organic Transformations and Renewable Fuel Production.” 2016. Doctoral Dissertation, Arizona State University. Accessed January 20, 2021. http://repository.asu.edu/items/39403.

MLA Handbook (7^th Edition):

Mukhopadhyay, Tufan Kumar. “Development of Homogeneous Manganese and Iron Catalysts for Organic Transformations and Renewable Fuel Production.” 2016. Web. 20 Jan 2021.

Vancouver:

Mukhopadhyay TK. Development of Homogeneous Manganese and Iron Catalysts for Organic Transformations and Renewable Fuel Production. [Internet] [Doctoral dissertation]. Arizona State University; 2016. [cited 2021 Jan 20]. Available from: http://repository.asu.edu/items/39403.

Council of Science Editors:

Mukhopadhyay TK. Development of Homogeneous Manganese and Iron Catalysts for Organic Transformations and Renewable Fuel Production. [Doctoral Dissertation]. Arizona State University; 2016. Available from: http://repository.asu.edu/items/39403

13. Chen, J. Bio-inspired Iron and Manganese Complexes with N2Py2 Ligands: Towards Their Practical Use in Catalytic Oxidations.

Degree: 2019, University Utrecht

URL: https://dspace.library.uu.nl/handle/1874/373961 ; URN:NBN:NL:UI:10-1874-373961 ; 1874/373961 ; urn:isbn:9789039370759 ; URN:NBN:NL:UI:10-1874-373961 ; https://dspace.library.uu.nl/handle/1874/373961

► C–H and C=C bond oxidations constitute essential transformations in organic synthesis and in many biological and industrial processes. In the past decades numerous non-heme iron… (more)

Subjects/Keywords: catalytic oxidations; non-heme iron and manganese catalysts; hydrogen peroxide; bio-inspired

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APA (6^th Edition):

Chen, J. (2019). Bio-inspired Iron and Manganese Complexes with N2Py2 Ligands: Towards Their Practical Use in Catalytic Oxidations. (Doctoral Dissertation). University Utrecht. Retrieved from https://dspace.library.uu.nl/handle/1874/373961 ; URN:NBN:NL:UI:10-1874-373961 ; 1874/373961 ; urn:isbn:9789039370759 ; URN:NBN:NL:UI:10-1874-373961 ; https://dspace.library.uu.nl/handle/1874/373961

Chicago Manual of Style (16^th Edition):

Chen, J. “Bio-inspired Iron and Manganese Complexes with N2Py2 Ligands: Towards Their Practical Use in Catalytic Oxidations.” 2019. Doctoral Dissertation, University Utrecht. Accessed January 20, 2021. https://dspace.library.uu.nl/handle/1874/373961 ; URN:NBN:NL:UI:10-1874-373961 ; 1874/373961 ; urn:isbn:9789039370759 ; URN:NBN:NL:UI:10-1874-373961 ; https://dspace.library.uu.nl/handle/1874/373961.

MLA Handbook (7^th Edition):

Chen, J. “Bio-inspired Iron and Manganese Complexes with N2Py2 Ligands: Towards Their Practical Use in Catalytic Oxidations.” 2019. Web. 20 Jan 2021.

Vancouver:

Chen J. Bio-inspired Iron and Manganese Complexes with N2Py2 Ligands: Towards Their Practical Use in Catalytic Oxidations. [Internet] [Doctoral dissertation]. University Utrecht; 2019. [cited 2021 Jan 20]. Available from: https://dspace.library.uu.nl/handle/1874/373961 ; URN:NBN:NL:UI:10-1874-373961 ; 1874/373961 ; urn:isbn:9789039370759 ; URN:NBN:NL:UI:10-1874-373961 ; https://dspace.library.uu.nl/handle/1874/373961.

Council of Science Editors:

Chen J. Bio-inspired Iron and Manganese Complexes with N2Py2 Ligands: Towards Their Practical Use in Catalytic Oxidations. [Doctoral Dissertation]. University Utrecht; 2019. Available from: https://dspace.library.uu.nl/handle/1874/373961 ; URN:NBN:NL:UI:10-1874-373961 ; 1874/373961 ; urn:isbn:9789039370759 ; URN:NBN:NL:UI:10-1874-373961 ; https://dspace.library.uu.nl/handle/1874/373961

14. Σταμάτης, Άγγελος. Ομογενείς και ετερογενοποιημένοι βιομιμητικοί καταλύτες σε αντιδράσεις οξείδωσης.

Degree: 2009, University of Ioannina; Πανεπιστήμιο Ιωαννίνων

URL: http://hdl.handle.net/10442/hedi/17827

►

We firstly present, a broad review based on intrenational literature for non-heme metalloproteins as manganese-catalase and superoxide dismutase. As far as non-heme metalloproteiens is concerned,… (more)

▼

We firstly present, a broad review based on intrenational literature for non-heme metalloproteins as manganese-catalase and superoxide dismutase. As far as non-heme metalloproteiens is concerned, we focus on the active center of these enzynes and their catalytic mechanisms. We continue with a review on Mn-homogeneous-catalysts. Further on we present a broad review on hybrid organic-inorganic catalysts. We refer details on the main features that the supported catalysts should have, the procedures to heterogenise the homogeneous catalysts, and the approaches to form covalent attachement on the silica surface. We complete the introduction reviewing the heterogenised-Mn-catalysts. Furthermore we demonstrate, analyse and discuss the experimental data. Firstly, three macromolecular Schiff bases were synthesized, L1, L2 and L3. The next step was the synthesis of the corresponding homogenous systems with Mn(II) using MnCl2 and Mn(CH3COO)2 as metal sources. Moreover, these ligands were immobilized on silica surface, using the grafting method. The corresponding supported-Mn(II)-complexes have been synthesized also. All these products were characterized with various spectroscopic techniques. At the beginning the optimal catalytic conditions have been investigated and the homogenous and heterogenous-Mn(II)-systems have been evaluated for the catalytic epoxidation of alkenes using H2O2 as oxidant. By comparison, the catalytic effectiveness of both homogeneous and heterogenized systems was found to be excellent in the presence of ammonium acetate. The stability of manganese-catalytic-systems was studied and, moreover, it was proposed a possible catalytic mechanism of the present systems. Concluding we present the general conclusions of this study and the bibliographic references used.

Αρχικά επιχειρείται μια ευρεία ανασκόπηση της διεθνούς βιβλιογραφίας για μη- αιμικά συστήματα μαγγανίου όπως η Mn-καταλάση και η υπεροξειδική δισμουτάση. Συγκεκριμένα γίνεται εκτενή αναφορά στις δομές των ενεργών κέντρων των ενζύμων και τους προτεινόμενους μηχανισμούς της ενζυμικής κατάλυσης. Η ανασκόπηση συνεχίζεται με εκτενή αναφορά σε ομογενή καταλυτικά συστήματα Mn. Ακολουθεί μια ευρεία ανασκόπηση της διεθνούς βιβλιογραφίας για ετερογενοποιημένα συστήματα. Συγκεκριμένα αναφέρονται τα γενικά χαρακτηριστικά που πρέπει να διαθέτουν τα υλικά υποστήριξης, οι τρόποι ετερογενοποίησης των ομογενών καταλυτών καθώς και οι διάφορες πορείες ακινητοποίησης μέσω ομοιοπολικής σύνδεσης ενός οργανικού μορίου στην επιφάνεια της silica. Τέλος γίνεται αναφορά σε ετερογενοποιημένα καταλυτικά συστήματα Mn. Εν συνεχεία παραθέτονται και αναλύονται τα πειραματικά δεδομένα. Συντέθηκαν τρεις νέες μακρομοριακές βάσεις του Schiff, οι υποκαταστάτες L1, L2 και L3. Έπειτα παρασκευάστηκαν τα ομογενή καταλυτικά συστήματα Mn(II) χρησιμοποιώντας MnCl2 και Mn(CH3COO)2 ως πηγή μεταλλοϊόντων. Επίσης οι παραπάνω υποκαταστάτες ακινητοποιήθηκαν σε επιφάνεια silca μέσω σχηματισμού ομοιοπολικού δεσμού παρέχοντας έτσι τους αντίστοιχους ακινητοποιημένους υποκαταστάτες Στην συνέχεια…

Subjects/Keywords: Καταλύτες οξείδωσης; Βιομιμητικοί καταλύτες; Σύμπλοκα μαγγανίου; Υποστηριγμένα σύμπλοκα μαγγανίου; Ενεργοποίηση υπεροξειδίου υδρογόνου; Τροποποιημένη επιφάνεια πυρίτιας; Εποξείδωση αλκενίων; Oxidation catalysts; Biomimetic catalysts; Manganese complexes; Supported manganese complexes; Hydrogen peroxide activation; Modified silica surface; Alkene epoxidation

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APA (6^th Edition):

Σταμάτης, . �. (2009). Ομογενείς και ετερογενοποιημένοι βιομιμητικοί καταλύτες σε αντιδράσεις οξείδωσης. (Thesis). University of Ioannina; Πανεπιστήμιο Ιωαννίνων. Retrieved from http://hdl.handle.net/10442/hedi/17827

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):

Σταμάτης, Άγγελος. “Ομογενείς και ετερογενοποιημένοι βιομιμητικοί καταλύτες σε αντιδράσεις οξείδωσης.” 2009. Thesis, University of Ioannina; Πανεπιστήμιο Ιωαννίνων. Accessed January 20, 2021. http://hdl.handle.net/10442/hedi/17827.

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

MLA Handbook (7^th Edition):

Σταμάτης, Άγγελος. “Ομογενείς και ετερογενοποιημένοι βιομιμητικοί καταλύτες σε αντιδράσεις οξείδωσης.” 2009. Web. 20 Jan 2021.

Vancouver:

Σταμάτης �. Ομογενείς και ετερογενοποιημένοι βιομιμητικοί καταλύτες σε αντιδράσεις οξείδωσης. [Internet] [Thesis]. University of Ioannina; Πανεπιστήμιο Ιωαννίνων; 2009. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10442/hedi/17827.

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

Council of Science Editors:

Σταμάτης �. Ομογενείς και ετερογενοποιημένοι βιομιμητικοί καταλύτες σε αντιδράσεις οξείδωσης. [Thesis]. University of Ioannina; Πανεπιστήμιο Ιωαννίνων; 2009. Available from: http://hdl.handle.net/10442/hedi/17827

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

15. Λεοντίου, Αρετή. Ετερογενείς περοβσκιτικού τύπου καταλύτες σιδήρου και μαγγανίου με μικτά σθένη.

Degree: 2004, University of Ioannina; Πανεπιστήμιο Ιωαννίνων

URL: http://hdl.handle.net/10442/hedi/20173

Subjects/Keywords: Περοβσκίτες; Σίδηρος; Μαγγάνιο; Καταλύτες; Μεθάνιο, Καύση; Μικτά σθένη; NO; CO; Perovskites; Iron; Manganese; Catalysts; Methane oxidation; Mixed valence

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APA (6^th Edition):

Λεοντίου, . �. (2004). Ετερογενείς περοβσκιτικού τύπου καταλύτες σιδήρου και μαγγανίου με μικτά σθένη. (Thesis). University of Ioannina; Πανεπιστήμιο Ιωαννίνων. Retrieved from http://hdl.handle.net/10442/hedi/20173

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):

Λεοντίου, Αρετή. “Ετερογενείς περοβσκιτικού τύπου καταλύτες σιδήρου και μαγγανίου με μικτά σθένη.” 2004. Thesis, University of Ioannina; Πανεπιστήμιο Ιωαννίνων. Accessed January 20, 2021. http://hdl.handle.net/10442/hedi/20173.

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

MLA Handbook (7^th Edition):

Λεοντίου, Αρετή. “Ετερογενείς περοβσκιτικού τύπου καταλύτες σιδήρου και μαγγανίου με μικτά σθένη.” 2004. Web. 20 Jan 2021.

Vancouver:

Λεοντίου �. Ετερογενείς περοβσκιτικού τύπου καταλύτες σιδήρου και μαγγανίου με μικτά σθένη. [Internet] [Thesis]. University of Ioannina; Πανεπιστήμιο Ιωαννίνων; 2004. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10442/hedi/20173.

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

Council of Science Editors:

Λεοντίου �. Ετερογενείς περοβσκιτικού τύπου καταλύτες σιδήρου και μαγγανίου με μικτά σθένη. [Thesis]. University of Ioannina; Πανεπιστήμιο Ιωαννίνων; 2004. Available from: http://hdl.handle.net/10442/hedi/20173

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

ETH Zürich

16. Schafir, Alexander. Beitrag zur Prüfung der katalytischen Wirksamkeit von Manganoxyden unter besonderer Berücksichtigung des Mangandioxydes.

Degree: 1947, ETH Zürich

URL: http://hdl.handle.net/20.500.11850/134888

Subjects/Keywords: KATALYSATOREN (CHEMISCHE REAKTIONEN); MANGAN(II)-OXID (ANORGANISCHE CHEMIE); CATALYSTS (CHEMICAL REACTIONS); MANGANESE MONOXIDE (INORGANIC CHEMISTRY); info:eu-repo/classification/ddc/540; Chemistry

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APA (6^th Edition):

Schafir, A. (1947). Beitrag zur Prüfung der katalytischen Wirksamkeit von Manganoxyden unter besonderer Berücksichtigung des Mangandioxydes. (Doctoral Dissertation). ETH Zürich. Retrieved from http://hdl.handle.net/20.500.11850/134888

Chicago Manual of Style (16^th Edition):

Schafir, Alexander. “Beitrag zur Prüfung der katalytischen Wirksamkeit von Manganoxyden unter besonderer Berücksichtigung des Mangandioxydes.” 1947. Doctoral Dissertation, ETH Zürich. Accessed January 20, 2021. http://hdl.handle.net/20.500.11850/134888.

MLA Handbook (7^th Edition):

Schafir, Alexander. “Beitrag zur Prüfung der katalytischen Wirksamkeit von Manganoxyden unter besonderer Berücksichtigung des Mangandioxydes.” 1947. Web. 20 Jan 2021.

Vancouver:

Schafir A. Beitrag zur Prüfung der katalytischen Wirksamkeit von Manganoxyden unter besonderer Berücksichtigung des Mangandioxydes. [Internet] [Doctoral dissertation]. ETH Zürich; 1947. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/20.500.11850/134888.

Council of Science Editors:

Schafir A. Beitrag zur Prüfung der katalytischen Wirksamkeit von Manganoxyden unter besonderer Berücksichtigung des Mangandioxydes. [Doctoral Dissertation]. ETH Zürich; 1947. Available from: http://hdl.handle.net/20.500.11850/134888

ETH Zürich

17. Vogt, Erich. Ueber den Einfluss von Schwermetalloxyden auf die katalytischen Eigenschaften von Mangandioxyd.

Degree: 1958, ETH Zürich

URL: http://hdl.handle.net/20.500.11850/133489

Subjects/Keywords: KATALYSATOREN (CHEMISCHE REAKTIONEN); MANGANOXIDE (ANORGANISCHE CHEMIE); SCHWERMETALLE (CHEMISCHE ELEMENTE); CATALYSTS (CHEMICAL REACTIONS); MANGANESE OXIDES (INORGANIC CHEMISTRY); HEAVY METALS (CHEMICAL ELEMENTS); info:eu-repo/classification/ddc/540; Chemistry

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APA (6^th Edition):

Vogt, E. (1958). Ueber den Einfluss von Schwermetalloxyden auf die katalytischen Eigenschaften von Mangandioxyd. (Doctoral Dissertation). ETH Zürich. Retrieved from http://hdl.handle.net/20.500.11850/133489

Chicago Manual of Style (16^th Edition):

Vogt, Erich. “Ueber den Einfluss von Schwermetalloxyden auf die katalytischen Eigenschaften von Mangandioxyd.” 1958. Doctoral Dissertation, ETH Zürich. Accessed January 20, 2021. http://hdl.handle.net/20.500.11850/133489.

MLA Handbook (7^th Edition):

Vogt, Erich. “Ueber den Einfluss von Schwermetalloxyden auf die katalytischen Eigenschaften von Mangandioxyd.” 1958. Web. 20 Jan 2021.

Vancouver:

Vogt E. Ueber den Einfluss von Schwermetalloxyden auf die katalytischen Eigenschaften von Mangandioxyd. [Internet] [Doctoral dissertation]. ETH Zürich; 1958. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/20.500.11850/133489.

Council of Science Editors:

Vogt E. Ueber den Einfluss von Schwermetalloxyden auf die katalytischen Eigenschaften von Mangandioxyd. [Doctoral Dissertation]. ETH Zürich; 1958. Available from: http://hdl.handle.net/20.500.11850/133489

University of Oklahoma

18. Sikabwe, Chandja Emmanuel. Investigations of the effects of iron, manganese, and nickel on the properties of sulfated zirconia catalysts.

Degree: PhD, Department of Chemistry and Biochemistry, 1997, University of Oklahoma

URL: http://hdl.handle.net/11244/5499

► Thermogravimetry studies were augmented with chromatographic separation and mass spectrometric analysis of volatiles evolved during 1-butene TPD. Results from these studies suggested that metal promoted… (more)

Subjects/Keywords: Zirconium oxide Effect of iron on.; Zirconium oxide Effect of nickel on.; Chemistry, Analytical.; Zirconium oxide Effect of manganese on.; Catalysts.; Chemistry, Organic.

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APA (6^th Edition):

Sikabwe, C. E. (1997). Investigations of the effects of iron, manganese, and nickel on the properties of sulfated zirconia catalysts. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/5499

Chicago Manual of Style (16^th Edition):

Sikabwe, Chandja Emmanuel. “Investigations of the effects of iron, manganese, and nickel on the properties of sulfated zirconia catalysts.” 1997. Doctoral Dissertation, University of Oklahoma. Accessed January 20, 2021. http://hdl.handle.net/11244/5499.

MLA Handbook (7^th Edition):

Sikabwe, Chandja Emmanuel. “Investigations of the effects of iron, manganese, and nickel on the properties of sulfated zirconia catalysts.” 1997. Web. 20 Jan 2021.

Vancouver:

Sikabwe CE. Investigations of the effects of iron, manganese, and nickel on the properties of sulfated zirconia catalysts. [Internet] [Doctoral dissertation]. University of Oklahoma; 1997. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/11244/5499.

Council of Science Editors:

Sikabwe CE. Investigations of the effects of iron, manganese, and nickel on the properties of sulfated zirconia catalysts. [Doctoral Dissertation]. University of Oklahoma; 1997. Available from: http://hdl.handle.net/11244/5499

19. Patil, Aniket. Simultaneous Fixed Bed Removal of Nitrogen Oxides and Mercury Using Manganese and Cerium Mixed Metal Oxide Catalysts at Low Temperature SCR.

Degree: MS, Engineering and Applied Science: Chemical Engineering, 2018, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530266242697853

► In the last few decades there has been increasing concern about the effects of air pollution on the environment and human health. It is important… (more)

▼ In the last few decades there has been increasing concern about the effects of air pollution on the environment and human health. It is important to control emissions from coal-fired power plants, which are one of the major sources of air pollution by the emission of NOx, mercury and other heavy metals such as arsenic. Cost effective technologies must be developed to curb this pollution to reduce the threat to the worldwide environment and to human health. In this work, manganese-cerium mixed-metal oxide catalysts were evaluated for simultaneous removal of nitrogen oxide and gas phase elemental mercury at low temperature selective catalytic reduction (LTSCR) conditions using ammonia as a reductant. The effect sulfur dioxide and water on LTSCR was also studied as these gases are also present in flue gas from power plants along with nitrogen oxide and mercury and affect the efficiency of LTSCR catalysts.The catalysts used in this study were MnOx-CeO2-MxOy (MxOy = Al2O3, HfO2, SiO2, ZrO2), identified as MCA, MCH, MCS, MCZ respectively. The simultaneous capacity of these materials to remove NO and Hg0 in the presence of SO2 and water was determined at 160°C. The material with highest performance at 160°C was MCA with 12 mg g-1 Hg0 adsorption and average NO removal of 75%. MCZ had 13.3 mg g-1 Hg0 adsorption and average NO removal of 68% followed by MCH with 10.4 mg g-1 Hg0 adsorption and average NO removal of 55%. MCS had 8 mg g-1 Hg0 adsorption and average NO removal of 58%.The influence of temperature on the simultaneous removal capacity of each material in the presence of SO2 and water was determined by lowering the catalyst bed temperature to 140°C and increasing the bed temperature to 200°C. At 140°C MCA had highest Hg0 adsorption at 10 mg g-1 Hg0 adsorption followed by MCA 8 mg g-1 Hg0 adsorption. The Hg0 adsorption for MCH and MCS was 6.5 mg g-1 and 4.2 mg g-1 respectively. When the bed temperature was increased to 200°C the Hg adsorption capacities increased remarkably. The NO catalytic removal for all materials in all three cases remained same. Hence, the presence of Hg0 does not affect the reduction of NO in simultaneous study. The simultaneous removal capacities decrease when SO2 and H2O was present in the inlet gas stream. The simultaneous removal capacities determined in this study in the presence of SO2 and H2O are much greater than previous studies completed and in the literature.In summary, the catalysts MnOx-CeO2-MxOy (MxOy = Al2O3, HfO2, SiO2, ZrO2) can simultaneously remove of NO and Hg0 in the presence of SO2 and water. These catalysts sustained their catalytic activity in simulated flue gas inlet concentrations much higher than observed in realistic applications. These materials can be a cost-effective alternative for multi-pollutant control in coal combustion. Advisors/Committee Members: Thiel, Stephen (Committee Chair).

Subjects/Keywords: Chemical Engineering; Simultaneous removal of NO and Hg; Low temperature SCR; mixed metal oxide catalysts; cerium and manganese; NO reduction by NH3; Fixed Bed Removal

…reduction (LTSCR) over manganese-cerium mixed metal oxide catalysts that simultaneously… …SO2. Manganese (Mn)-based catalysts have been demonstrated to have good low… …42 3.4 XPS Characterization Results for Fresh and Spent Catalysts… …catalysts [11] ........................................................ 13 Table 2. 1… …MCA, MCZ, MCS, and MCH catalysts at gas hourly space velocity (GHSV) = 12,500 h-1…

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APA (6^th Edition):

Patil, A. (2018). Simultaneous Fixed Bed Removal of Nitrogen Oxides and Mercury Using Manganese and Cerium Mixed Metal Oxide Catalysts at Low Temperature SCR. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530266242697853

Chicago Manual of Style (16^th Edition):

Patil, Aniket. “Simultaneous Fixed Bed Removal of Nitrogen Oxides and Mercury Using Manganese and Cerium Mixed Metal Oxide Catalysts at Low Temperature SCR.” 2018. Masters Thesis, University of Cincinnati. Accessed January 20, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530266242697853.

MLA Handbook (7^th Edition):

Patil, Aniket. “Simultaneous Fixed Bed Removal of Nitrogen Oxides and Mercury Using Manganese and Cerium Mixed Metal Oxide Catalysts at Low Temperature SCR.” 2018. Web. 20 Jan 2021.

Vancouver:

Patil A. Simultaneous Fixed Bed Removal of Nitrogen Oxides and Mercury Using Manganese and Cerium Mixed Metal Oxide Catalysts at Low Temperature SCR. [Internet] [Masters thesis]. University of Cincinnati; 2018. [cited 2021 Jan 20]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530266242697853.

Council of Science Editors:

Patil A. Simultaneous Fixed Bed Removal of Nitrogen Oxides and Mercury Using Manganese and Cerium Mixed Metal Oxide Catalysts at Low Temperature SCR. [Masters Thesis]. University of Cincinnati; 2018. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530266242697853

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