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. 2003 Aug 15;301(5635):935-8.
doi: 10.1126/science.1085721. Epub 2003 Jul 3.

Active nonmetallic Au and Pt species on ceria-based water-gas shift catalysts

Qi Fu  1 , Howard Saltsburg, Maria Flytzani-Stephanopoulos
Affiliations

Active nonmetallic Au and Pt species on ceria-based water-gas shift catalysts

Qi Fu et al. Science. .

Abstract

Traditional analysis of reactions catalyzed by supported metals involves the structure of the metallic particles. However, we report here that for the class of nanostructured gold- or platinum-cerium oxide catalysts, which are active for the water-gas shift reaction, metal nanoparticles do not participate in the reaction. Nonmetallic gold or platinum species strongly associated with surface cerium-oxygen groups are responsible for the activity.

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