INVESTIGADORES
LABORDE Miguel Angel
artículos
Título:
Mechanism of CO oxidation over CuO/CeO2 catalysts.
Autor/es:
MÁXIMO MORENO; LORENA BERGAMINI, GRACIELA BARONETTI, MIGUEL LABORDE, FERNANDO MARIÑO
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2010 vol. 35 p. 5918 - 5924
ISSN:
0360-3199
Resumen:
A mechanistic study of the CO oxidation reaction over coppercerium 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
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
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
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 redoxredox
couples (Ce4þ/Ce3þ and Cu2þ/Cu1þ). 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.
consists of five constants and is able to accurately predict the behavior of the reactor in
different reaction conditions.
consists of five constants and is able to accurately predict the behavior of the reactor in
different reaction conditions.
4þ/Ce3þ and Cu2þ/Cu1þ). 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.