On the mechanism of hydrogen-promoted gold-catalyzed CO oxidation
Type
ArticleAuthors
Quinet, ElodiePiccolo, Laurent
Morfin, Franck
Avenier, Priscilla
Diehl, Fabrice
Caps, Valerie

Rousset, Jean Luc
KAUST Department
KAUST Catalysis Center (KCC)Date
2009-12-10Permanent link to this record
http://hdl.handle.net/10754/566008
Metadata
Show full item recordAbstract
The kinetics of CO oxidation, H2 oxidation and preferential CO oxidation (PrOx) over Au/Al2O3 catalysts have been investigated. The catalysts with the smallest particles (∼2 nm) are the most active for all three reactions. As previously observed, the presence of H2 greatly promotes CO oxidation, which becomes faster than CO-free H2 oxidation at low temperature. From these results and on the basis of previous works, we propose a complete PrOx mechanism. The reaction involves Au-OOH, Au-OH and Au-H intermediates, also involved in H2 oxidation, and benefits from the presence of low-coordination sites. © 2009 Elsevier Inc. All rights reserved.Citation
Quinet, E., Piccolo, L., Morfin, F., Avenier, P., Diehl, F., Caps, V., & Rousset, J.-L. (2009). On the mechanism of hydrogen-promoted gold-catalyzed CO oxidation. Journal of Catalysis, 268(2), 384–389. doi:10.1016/j.jcat.2009.09.019Publisher
Elsevier BVJournal
Journal of Catalysisae974a485f413a2113503eed53cd6c53
10.1016/j.jcat.2009.09.019