Mechanism of CO oxidation over CuO/CeO2 catalysts

A mechanistic study of the CO oxidation reaction over copper-cerium catalysts was performed based on our own results and information available in literature. The fit of parameters was carried out with kinetic information obtained ad-hoc. Two possible mechanisms whose main difference is the role of c...

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Detalles Bibliográficos
Publicado: 2010
Materias:
Ce
CO oxidation
Cu
Hydrogen
Kinetics
Mechanism
Catalytic cycles
CuO/CeO
Hydrogen kinetics
Kinetic expression
Kinetic information
Mechanistic studies
Oxidation state
Reaction conditions
Redox couple
REDOX cycles
Catalysts
Cerium compounds
Copper
Oxidation
Reaction kinetics
Cerium
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v35_n11_p5918_Moreno
http://hdl.handle.net/20.500.12110/paper_03603199_v35_n11_p5918_Moreno
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03603199_v35_n11_p5918_Moreno
record_format dspace
spelling paper:paper_03603199_v35_n11_p5918_Moreno2023-06-08T15:34:39Z Mechanism of CO oxidation over CuO/CeO2 catalysts Ce CO oxidation Cu Hydrogen Kinetics Mechanism Catalytic cycles CO oxidation CuO/CeO Hydrogen kinetics Kinetic expression Kinetic information Mechanistic studies Oxidation state Reaction conditions Redox couple REDOX cycles Catalysts Cerium compounds Copper Oxidation Reaction kinetics Cerium A mechanistic study of the CO oxidation reaction over copper-cerium catalysts was performed based on our own results and information available in literature. The fit of parameters was carried out with kinetic information obtained ad-hoc. Two possible mechanisms whose main difference is the role of copper were proposed. The first one postulates changes in the oxidation state of both cations (cerium and copper) while, in the second mechanism, it was assumed that the redox cycle only occurs for the ceria component. The results allow to conclude that the catalytic cycle involves both redox couples (Ce 4+/Ce3+ and Cu2+/Cu1+). The kinetic expression derived from this mechanism consists of five constants and is able to accurately predict the behavior of the reactor in different reaction conditions. © 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v35_n11_p5918_Moreno http://hdl.handle.net/20.500.12110/paper_03603199_v35_n11_p5918_Moreno
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ce
CO oxidation
Cu
Hydrogen
Kinetics
Mechanism
Catalytic cycles
CO oxidation
CuO/CeO
Hydrogen kinetics
Kinetic expression
Kinetic information
Mechanistic studies
Oxidation state
Reaction conditions
Redox couple
REDOX cycles
Catalysts
Cerium compounds
Copper
Oxidation
Reaction kinetics
Cerium
spellingShingle Ce
CO oxidation
Cu
Hydrogen
Kinetics
Mechanism
Catalytic cycles
CO oxidation
CuO/CeO
Hydrogen kinetics
Kinetic expression
Kinetic information
Mechanistic studies
Oxidation state
Reaction conditions
Redox couple
REDOX cycles
Catalysts
Cerium compounds
Copper
Oxidation
Reaction kinetics
Cerium
Mechanism of CO oxidation over CuO/CeO2 catalysts
topic_facet Ce
CO oxidation
Cu
Hydrogen
Kinetics
Mechanism
Catalytic cycles
CO oxidation
CuO/CeO
Hydrogen kinetics
Kinetic expression
Kinetic information
Mechanistic studies
Oxidation state
Reaction conditions
Redox couple
REDOX cycles
Catalysts
Cerium compounds
Copper
Oxidation
Reaction kinetics
Cerium
description A mechanistic study of the CO oxidation reaction over copper-cerium catalysts was performed based on our own results and information available in literature. The fit of parameters was carried out with kinetic information obtained ad-hoc. Two possible mechanisms whose main difference is the role of copper were proposed. The first one postulates changes in the oxidation state of both cations (cerium and copper) while, in the second mechanism, it was assumed that the redox cycle only occurs for the ceria component. The results allow to conclude that the catalytic cycle involves both redox couples (Ce 4+/Ce3+ and Cu2+/Cu1+). The kinetic expression derived from this mechanism consists of five constants and is able to accurately predict the behavior of the reactor in different reaction conditions. © 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
title Mechanism of CO oxidation over CuO/CeO2 catalysts
title_short Mechanism of CO oxidation over CuO/CeO2 catalysts
title_full Mechanism of CO oxidation over CuO/CeO2 catalysts
title_fullStr Mechanism of CO oxidation over CuO/CeO2 catalysts
title_full_unstemmed Mechanism of CO oxidation over CuO/CeO2 catalysts
title_sort mechanism of co oxidation over cuo/ceo2 catalysts
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v35_n11_p5918_Moreno
http://hdl.handle.net/20.500.12110/paper_03603199_v35_n11_p5918_Moreno
_version_ 1768546022629310464

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