Gold supported on CuOₓ/CeO₂ catalyst for the purification of hydrogen by the CO preferential oxidation reaction (PROX)
Fecha
2014Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
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10.1016/j.fuel.2013.10.072
Resumen
Hydrogen produced from the conversion of hydrocarbons or alcohols contains variable amounts of CO that should be removed for some applications such as feeding low-temperature polymer electrolyte
membrane fuel cells (PEMFCs). The CO preferential oxidation reaction (PROX) is particularly well-suited for hydrogen purification for portable and on-board applications. In this work, the synthesis and ch ...
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Hydrogen produced from the conversion of hydrocarbons or alcohols contains variable amounts of CO that should be removed for some applications such as feeding low-temperature polymer electrolyte
membrane fuel cells (PEMFCs). The CO preferential oxidation reaction (PROX) is particularly well-suited for hydrogen purification for portable and on-board applications. In this work, the synthesis and characterization by XRF, BET, XRD, Raman spectroscopy and H2-TPR of a gold catalyst supported on a coppercerium mixed oxide (AuCeCu) for the PROX reaction are presented. The comparison of this
catalyst with the copper–cerium mixed oxide (CeCu) revealed that the experimental procedure used for the deposition of gold gave rise to the loss of reducible material by copper lixiviation. However,
the AuCeCu solid was more active for CO oxidation at low temperature. A kinetic study has been carried over the AuCeCu catalyst for the PROX reaction and compared with that of the CeCu catalyst. The main
difference between the models affected the contribution of the CO adsorption term. This fact may be related to the surface electronic activity produced by the interaction of the cationic species in the AuCeCu
solid, able to create more active sites for the CO adsorption and activation in the presence of gold. [--]
Materias
Gold catalyst,
Copper–cerium oxide,
Hydrogen,
PROX,
CO oxidation
Editor
Elsevier
Publicado en
Fuel, 2014, 118, 176-185
Departamento
Universidad Pública de Navarra. Departamento de Química Aplicada /
Nafarroako Unibertsitate Publikoa. Kimika Aplikatua Saila
Versión del editor
Entidades Financiadoras
Financial support for this work has been obtained from the Spanish Ministry of Science and Innovation and Ministry of Economy and Competitiveness (ENE2009-14522-C05 and ENE2012-37431-C03-03, respectively) co-financed by FEDER funds from the European Union, and from Junta de Andalucía (P09-TEP5454). O. H. Laguna thanks the same Ministry for the FPI fellowship (BES-2007-14409) awarded.