Optimized CuO-CeO2 catalysts for COPROX reaction

CuO - CeO2 catalyst precursors were synthesized by homogeneous thermal decomposition of urea. Catalysts containing different Cu/Ce ratios were obtained after calcination of the precursors at 450 {ring operator} C and characterized by ICP-OES, N2 adsorption, XRD and TPR. Catalytic tests were performe...

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Detalles Bibliográficos
Publicado:	2008
Materias:	Ceria Copper Hydrogen PEM fuel cells Preferential oxidation of CO Calcination Copper compounds Nitric acid Proton exchange membrane fuel cells (PEMFC) Synthesis (chemical) X ray diffraction analysis COPROX reaction Catalyst activity
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v33_n4_p1345_Marino http://hdl.handle.net/20.500.12110/paper_03603199_v33_n4_p1345_Marino
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03603199_v33_n4_p1345_Marino
record_format	dspace
spelling	paper:paper_03603199_v33_n4_p1345_Marino2023-06-08T15:34:38Z Optimized CuO-CeO2 catalysts for COPROX reaction Ceria Copper Hydrogen PEM fuel cells Preferential oxidation of CO Calcination Copper compounds Nitric acid Proton exchange membrane fuel cells (PEMFC) Synthesis (chemical) X ray diffraction analysis COPROX reaction Preferential oxidation of CO Catalyst activity CuO - CeO2 catalyst precursors were synthesized by homogeneous thermal decomposition of urea. Catalysts containing different Cu/Ce ratios were obtained after calcination of the precursors at 450 {ring operator} C and characterized by ICP-OES, N2 adsorption, XRD and TPR. Catalytic tests were performed in the temperature range 100 - 300 {ring operator} C to evaluate the activity of these samples for the COPROX reaction. A strong synergy between Cu and Ce is evidenced by the difference in the catalytic activity of the individual oxides (CuO and CeO2), a mechanical mixture of both oxides and a Cu-Ce mixed catalyst. The synergy between Cu and Ce is confirmed by the improvement of the reducibility of both cations in the mixed samples. Nitric acid and ammonium carbonate washed catalysts, especially high-copper-content samples, are more active than the untreated catalysts suggesting that the washing procedure could provoke a destruction of the polycrystalline structure that improves the contact between the reactants and the catalytic sites. © 2007 International Association for Hydrogen Energy. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v33_n4_p1345_Marino http://hdl.handle.net/20.500.12110/paper_03603199_v33_n4_p1345_Marino
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Ceria Copper Hydrogen PEM fuel cells Preferential oxidation of CO Calcination Copper compounds Nitric acid Proton exchange membrane fuel cells (PEMFC) Synthesis (chemical) X ray diffraction analysis COPROX reaction Preferential oxidation of CO Catalyst activity
spellingShingle	Ceria Copper Hydrogen PEM fuel cells Preferential oxidation of CO Calcination Copper compounds Nitric acid Proton exchange membrane fuel cells (PEMFC) Synthesis (chemical) X ray diffraction analysis COPROX reaction Preferential oxidation of CO Catalyst activity Optimized CuO-CeO2 catalysts for COPROX reaction
topic_facet	Ceria Copper Hydrogen PEM fuel cells Preferential oxidation of CO Calcination Copper compounds Nitric acid Proton exchange membrane fuel cells (PEMFC) Synthesis (chemical) X ray diffraction analysis COPROX reaction Preferential oxidation of CO Catalyst activity
description	CuO - CeO2 catalyst precursors were synthesized by homogeneous thermal decomposition of urea. Catalysts containing different Cu/Ce ratios were obtained after calcination of the precursors at 450 {ring operator} C and characterized by ICP-OES, N2 adsorption, XRD and TPR. Catalytic tests were performed in the temperature range 100 - 300 {ring operator} C to evaluate the activity of these samples for the COPROX reaction. A strong synergy between Cu and Ce is evidenced by the difference in the catalytic activity of the individual oxides (CuO and CeO2), a mechanical mixture of both oxides and a Cu-Ce mixed catalyst. The synergy between Cu and Ce is confirmed by the improvement of the reducibility of both cations in the mixed samples. Nitric acid and ammonium carbonate washed catalysts, especially high-copper-content samples, are more active than the untreated catalysts suggesting that the washing procedure could provoke a destruction of the polycrystalline structure that improves the contact between the reactants and the catalytic sites. © 2007 International Association for Hydrogen Energy.
title	Optimized CuO-CeO2 catalysts for COPROX reaction
title_short	Optimized CuO-CeO2 catalysts for COPROX reaction
title_full	Optimized CuO-CeO2 catalysts for COPROX reaction
title_fullStr	Optimized CuO-CeO2 catalysts for COPROX reaction
title_full_unstemmed	Optimized CuO-CeO2 catalysts for COPROX reaction
title_sort	optimized cuo-ceo2 catalysts for coprox reaction
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v33_n4_p1345_Marino http://hdl.handle.net/20.500.12110/paper_03603199_v33_n4_p1345_Marino
_version_	1768544868105191424

Optimized CuO-CeO2 catalysts for COPROX reaction

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