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Javier Guzman, Silvio Carrettin, Juan C. Fierro-Gonzalez, Yalin Hao, Bruce C. Gates and Avelino Corma CO Oxidation Catalyzed by Supported Gold: Cooperation between Gold and Nanocrystalline Rare-Earth Supports Forms Reactive Surface Superoxide and Peroxide Species Angewandte Chemie International Edition 44

Version of Record online: 29 JUN 2005 | DOI: 10.1002/anie.200500659

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Beneficial defects: Reactive η1-superoxide and peroxide species at one-electron defect sites are formed at the metal–support interface in gold nanoclusters on nanocrystalline CeO2−x. These intermediates oxidize CO adsorbed on gold to form CO2. The reactive oxygen species are formed on nanocrystalline CeO2−x (see picture) but not on conventional CeO2, and their formation is enhanced by the gold.

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