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

نویسندگان

  • Qi Fu
  • Howard Saltsburg
  • Maria Flytzani-Stephanopoulos
چکیده

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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Ceria - Based Water - Gas Shift Catalysts Active Nonmetallic Au and Pt Species on

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عنوان ژورنال:
  • Science

دوره 301 5635  شماره 

صفحات  -

تاریخ انتشار 2003