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Abstract:

A study of the CO oxidation reaction was conducted on a CuO-CeO2 catalyst, with a copper content of 20 at%. The stability, activity and selectivity of this sample were evaluated in the absence of H2 and also under PROX conditions (i.e. in great H2 excess). The influence of the reaction temperature and the feed composition was also analyzed. It was found that water and CO2 have a negative effect on the catalytic activity. Except for the undesired oxidation of hydrogen, the occurrence of other lateral reactions that could be present in the PROX reactor can be discarded. A kinetic study was carried out in order to fit a classical power-law expression for CO oxidation rate. Although this mathematical expression gave a good fit in limited concentration ranges, it was found that the partial reaction orders depend on the reactant molar fractions. © 2009 International Association for Hydrogen Energy.

Registro:

Documento: Artículo
Título:Catalytic performance of a copper-promoted CeO2 catalyst in the CO oxidation: Influence of the operating variables and kinetic study
Autor:Schönbrod, B.; Mariño, F.; Baronetti, G.; Laborde, M.
Filiación:Laboratorio de Procesos Catalíticos, DIQ-FIUBA, Universidad de Buenos Aires, Pabellon Industrias, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Cerium oxide; Copper oxide; COPROX; Hydrogen production; Hydrogen purification; PEM fuel cell; Catalytic activities; Catalytic performance; Cerium oxide; Co oxidations; Concentration ranges; Copper contents; COPROX; Cuo ceos; Feed compositions; Hydrogen purification; Kinetic studies; Mathematical expressions; Molar fractions; Operating variables; Oxidation of hydrogens; Partial reaction orders; PEM fuel cell; Power-law expressions; Reaction temperatures; Catalysis; Catalyst activity; Cerium; Cerium compounds; Copper; Copper oxides; Electrochemistry; Fuel purification; Gas producers; Kinetic theory; Metal refining; Nonmetals; Oxidation; Oxides; Proton exchange membrane fuel cells (PEMFC); Reaction kinetics; Sodium compounds; Hydrogen production
Año:2009
Volumen:34
Número:9
Página de inicio:4021
Página de fin:4028
DOI: http://dx.doi.org/10.1016/j.ijhydene.2009.02.054
Título revista:International Journal of Hydrogen Energy
Título revista abreviado:Int J Hydrogen Energy
ISSN:03603199
CODEN:IJHED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v34_n9_p4021_Schonbrod

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Citas:

---------- APA ----------
Schönbrod, B., Mariño, F., Baronetti, G. & Laborde, M. (2009) . Catalytic performance of a copper-promoted CeO2 catalyst in the CO oxidation: Influence of the operating variables and kinetic study. International Journal of Hydrogen Energy, 34(9), 4021-4028.
http://dx.doi.org/10.1016/j.ijhydene.2009.02.054
---------- CHICAGO ----------
Schönbrod, B., Mariño, F., Baronetti, G., Laborde, M. "Catalytic performance of a copper-promoted CeO2 catalyst in the CO oxidation: Influence of the operating variables and kinetic study" . International Journal of Hydrogen Energy 34, no. 9 (2009) : 4021-4028.
http://dx.doi.org/10.1016/j.ijhydene.2009.02.054
---------- MLA ----------
Schönbrod, B., Mariño, F., Baronetti, G., Laborde, M. "Catalytic performance of a copper-promoted CeO2 catalyst in the CO oxidation: Influence of the operating variables and kinetic study" . International Journal of Hydrogen Energy, vol. 34, no. 9, 2009, pp. 4021-4028.
http://dx.doi.org/10.1016/j.ijhydene.2009.02.054
---------- VANCOUVER ----------
Schönbrod, B., Mariño, F., Baronetti, G., Laborde, M. Catalytic performance of a copper-promoted CeO2 catalyst in the CO oxidation: Influence of the operating variables and kinetic study. Int J Hydrogen Energy. 2009;34(9):4021-4028.
http://dx.doi.org/10.1016/j.ijhydene.2009.02.054