Catalysts 2012, 2(1), 121-138; doi:10.3390/catal2010121
Article

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

1email, 2email, 3email, 4email and 4,* email
Received: 9 January 2012; in revised form: 18 January 2012 / Accepted: 27 January 2012 / Published: 3 February 2012
(This article belongs to the Special Issue Gold Catalysts)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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.
Keywords: ethanol steam reforming; hydrogen; gold; cerium-zirconium-cobalt mixed oxides
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MDPI and ACS Style

Vargas, J.C.; Ivanova, S.; Thomas, S.; Roger, A.-C.; Pitchon, V. Influence of Gold on Ce-Zr-Co Fluorite-Type Mixed Oxide Catalysts for Ethanol Steam Reforming. Catalysts 2012, 2, 121-138.

AMA Style

Vargas JC, Ivanova S, Thomas S, Roger A-C, Pitchon V. Influence of Gold on Ce-Zr-Co Fluorite-Type Mixed Oxide Catalysts for Ethanol Steam Reforming. Catalysts. 2012; 2(1):121-138.

Chicago/Turabian Style

Vargas, Julio Cesar; Ivanova, Svetlana; Thomas, Sébastien; Roger, Anne-Cécile; Pitchon, Véronique. 2012. "Influence of Gold on Ce-Zr-Co Fluorite-Type Mixed Oxide Catalysts for Ethanol Steam Reforming." Catalysts 2, no. 1: 121-138.


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