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Influence of Gold on Ce-Zr-Co Fluorite-Type Mixed Oxide Catalysts for Ethanol Steam Reforming

 

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Opened Access Influence of Gold on Ce-Zr-Co Fluorite-Type Mixed Oxide Catalysts for Ethanol Steam Reforming
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Author: Vargas, Julio César
Ivanova, Svetlana
Thomas, Sébastien
Roger, Anne-Cécile
Pitchon, Véronique
Department: Universidad de Sevilla. Departamento de Química Inorgánica
Date: 2012-02-03
Published in: International Journal of Molecular Sciences, 2 (1), 121-138.
Document type: Article
Abstract: The effect of gold presence on carbon monoxide oxidation and ethanol steam reforming catalytic behavior of two Ce-Zr-Co mixed oxides catalysts with a constant Co charge and different Ce/Zr ratios was investigated. The Ce-Zr-Co mixed oxides were obtained by the pseudo sol-gel like method, based on metallic propionates polymerization and thermal decomposition, whereas the gold-supported Ce-Zr-Co mixed oxides catalysts were prepared using the direct anionic exchange. The catalysts were characterized using XRD, TPR, and EDXS-TEM. The presence of Au in doped Ce-Zr-Co oxide catalyst decreases the temperature necessary to reduce the cobalt and the cerium loaded in the catalyst and favors a different reaction pathway, improving the acetaldehyde route by ethanol dehydrogenation, instead of the ethylene route by ethanol dehydration or methane re-adsorption, thus increasing the catalytic activity and selectivity into hydrogen.
Cite: Vargas, J.C., Ivanova, S., Thomas, S., Roger, A. y Pitchon, V. (2012). Influence of Gold on Ce-Zr-Co Fluorite-Type Mixed Oxide Catalysts for Ethanol Steam Reforming. International Journal of Molecular Sciences, 2 (1), 121-138.
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URI: http://hdl.handle.net/11441/64159

DOI: 10.3390/catal2010121

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