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Active Nonmetallic Au and Pt Species on Ceria-Based Water-Gas Shift Catalysts
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Science 301, 935 (2003); DOI: 10.1126/science.1085721 CeO2¸ºÔØPtºÍAu£¬²¢ÓÃÀ´×öË®Æûת»¯·´Ó¦µÄ¸ßÖÊÁ¿ÎÄÕ¡£ ÕªÒª£ºTraditional 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¨C or platinum¨Ccerium 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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2013-05-21 17:02:46, 318.16 K
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