Engineering Pt in Ceria for a Maximum Metal-Support Interaction in Catalysis

摘要

Traditional supported metal catalysts are comprised of small metal particles dispersed on the internal surface of an oxide support.Catalytic activity and selectivity of the catalyst are commonly found to be dependent on the type of metal and support used.A great deal of research has been devoted to understanding this metal- support interaction in order to tailor the interaction for optimum catalysis.However,most conventional support and metal surfaces are structurally non-uniform; thus,the structures of supported metal catalysts are not well understood.Noble metal (NM)/ceria-based catalysts are among the systems long known to exhibit strong metal-support interaction (SMSI) effects.These catalysts have been shown to give high activity for hydrogenation reactions,water-gas shift reactions,CO and hydrocarbon oxidation,etc.