CuO-CeO2 catalysts synthesized in one-step: Characterization and PROX performance
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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| Data(s) |
04/11/2013
04/11/2013
2012
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| Resumo |
PEM fuel cells seem to be the most affordable and commercially viable hydrogen-based cells, the biggest challenge being to obtain CO-free H-2 (<100 ppm) as the fuel. In this study, the use of CuO-CeO2 catalysts in preferential oxidation of CO to obtain CO-free H-2 (PROX reaction) was investigated. Ce1-xCuxO2 catalysts, with x (mol%) = 0, 0.01, 0.03, 0.05 and 0.10, were synthesized in one-step by the polymeric precursor method, to obtain a very fine dispersion and strong metal-support interaction, to favor active copper species and a preference for the PROX reaction. The results obtained from catalyzed reactions and characterization of the catalysts by XRD, Rietveld refinement, BET surface area, UV-Vis and TPR, suggest that this one-step synthesis method gives rise to catalysts with copper species selective for the PROX reaction, which reaches a maximum rate on Ce0.97Cu0.03O2 catalyst. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. FAPESP FAPESP CAPES CAPES CNPq CNPq |
| Identificador |
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, OXFORD, v. 37, n. 7, supl. 1, Part 3, pp. 5498-5507, APR, 2012 0360-3199 http://www.producao.usp.br/handle/BDPI/37940 10.1016/j.ijhydene.2011.12.143 |
| Idioma(s) |
eng |
| Publicador |
PERGAMON-ELSEVIER SCIENCE LTD OXFORD |
| Relação |
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY |
| Direitos |
closedAccess Copyright PERGAMON-ELSEVIER SCIENCE LTD |
| Palavras-Chave | #PROX #CUO-CEO2 #HYDROGEN #POLYMERIC PRECURSOR METHOD #PREFERENTIAL CO OXIDATION #WATER-GAS SHIFT #CEO2-ZRO2 SOLID-SOLUTIONS #CERIUM OXIDE CATALYSTS #CARBON-MONOXIDE #SELECTIVE OXIDATION #REDOX PROPERTIES #COMBUSTION METHOD #EXCESS HYDROGEN #MIXED-OXIDE #CHEMISTRY, PHYSICAL #ELECTROCHEMISTRY #ENERGY & FUELS |
| Tipo |
article original article publishedVersion |
