Egg-shell CuO/CeO2/Al2O3 catalysts for CO preferential oxidation

Catalytic systems based on copper and cerium supported on γ-Al2O3 have shown to be extremely effective for CO preferential oxidation. In order to selectively oxidize carbon monoxide, it is desired that only CO can access to the active sites. Since the effective diffusion of H2 is higher than that of...

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Detalles Bibliográficos
Publicado:	2014
Materias:	Cerium Copper COPROX Hydrogen Intraparticular profiles Carbon monoxide Catalysts Catalytic oxidation Impregnation Oxidation Shells (structures) Carbon Catalyst particles Catalytic performance CO preferential oxidation CO-PROX Effective diffusion Impregnation process Radial distributions
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v40_n34_p11235_Marino http://hdl.handle.net/20.500.12110/paper_03603199_v40_n34_p11235_Marino
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03603199_v40_n34_p11235_Marino
record_format	dspace
spelling	paper:paper_03603199_v40_n34_p11235_Marino2023-06-08T15:34:43Z Egg-shell CuO/CeO2/Al2O3 catalysts for CO preferential oxidation Cerium Copper COPROX Hydrogen Intraparticular profiles Carbon monoxide Catalysts Catalytic oxidation Copper Hydrogen Impregnation Oxidation Shells (structures) Carbon Catalyst particles Catalytic performance CO preferential oxidation CO-PROX Effective diffusion Impregnation process Intraparticular profiles Radial distributions Cerium Catalytic systems based on copper and cerium supported on γ-Al2O3 have shown to be extremely effective for CO preferential oxidation. In order to selectively oxidize carbon monoxide, it is desired that only CO can access to the active sites. Since the effective diffusion of H2 is higher than that of CO, an egg-shell type distribution is preferred. With the objective of modifying the radial distribution of the active phases in the catalyst particle, the effect of four variables of the impregnation process is analyzed: metal loading, support-solution contact time, impregnation temperature and drying time. Radial profiles of Cu and Ce show that the egg-shell type distribution is favored by low metal loading, short contact and drying times and by high impregnation temperature. The effect of such variables is stronger on copper profile than on cerium profile. Catalytic performance on COPROX was enhanced by egg-shell type distribution. Copyright © 2015 Hydrogen Energy Publications, LLC. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v40_n34_p11235_Marino http://hdl.handle.net/20.500.12110/paper_03603199_v40_n34_p11235_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	Cerium Copper COPROX Hydrogen Intraparticular profiles Carbon monoxide Catalysts Catalytic oxidation Copper Hydrogen Impregnation Oxidation Shells (structures) Carbon Catalyst particles Catalytic performance CO preferential oxidation CO-PROX Effective diffusion Impregnation process Intraparticular profiles Radial distributions Cerium
spellingShingle	Cerium Copper COPROX Hydrogen Intraparticular profiles Carbon monoxide Catalysts Catalytic oxidation Copper Hydrogen Impregnation Oxidation Shells (structures) Carbon Catalyst particles Catalytic performance CO preferential oxidation CO-PROX Effective diffusion Impregnation process Intraparticular profiles Radial distributions Cerium Egg-shell CuO/CeO2/Al2O3 catalysts for CO preferential oxidation
topic_facet	Cerium Copper COPROX Hydrogen Intraparticular profiles Carbon monoxide Catalysts Catalytic oxidation Copper Hydrogen Impregnation Oxidation Shells (structures) Carbon Catalyst particles Catalytic performance CO preferential oxidation CO-PROX Effective diffusion Impregnation process Intraparticular profiles Radial distributions Cerium
description	Catalytic systems based on copper and cerium supported on γ-Al2O3 have shown to be extremely effective for CO preferential oxidation. In order to selectively oxidize carbon monoxide, it is desired that only CO can access to the active sites. Since the effective diffusion of H2 is higher than that of CO, an egg-shell type distribution is preferred. With the objective of modifying the radial distribution of the active phases in the catalyst particle, the effect of four variables of the impregnation process is analyzed: metal loading, support-solution contact time, impregnation temperature and drying time. Radial profiles of Cu and Ce show that the egg-shell type distribution is favored by low metal loading, short contact and drying times and by high impregnation temperature. The effect of such variables is stronger on copper profile than on cerium profile. Catalytic performance on COPROX was enhanced by egg-shell type distribution. Copyright © 2015 Hydrogen Energy Publications, LLC.
title	Egg-shell CuO/CeO2/Al2O3 catalysts for CO preferential oxidation
title_short	Egg-shell CuO/CeO2/Al2O3 catalysts for CO preferential oxidation
title_full	Egg-shell CuO/CeO2/Al2O3 catalysts for CO preferential oxidation
title_fullStr	Egg-shell CuO/CeO2/Al2O3 catalysts for CO preferential oxidation
title_full_unstemmed	Egg-shell CuO/CeO2/Al2O3 catalysts for CO preferential oxidation
title_sort	egg-shell cuo/ceo2/al2o3 catalysts for co preferential oxidation
publishDate	2014
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v40_n34_p11235_Marino http://hdl.handle.net/20.500.12110/paper_03603199_v40_n34_p11235_Marino
_version_	1768543037303029760

Egg-shell CuO/CeO2/Al2O3 catalysts for CO preferential oxidation

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