Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (11): 1975-1985.DOI: 10.1016/S1872-2067(12)60708-6

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The application of incorporation model in γ-Al2O3-supported single and dual metal oxide catalysts:A review

Xiaojiang Yaoa, Fei Gaob, Lin Donga,b   

  1. a School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University, Nanjing 210093, Jiangsu, China;
    b Center of Modern Analysis, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing 210093, Jiangsu, China
  • Received:2013-08-31 Revised:2013-09-10 Online:2013-10-18 Published:2013-10-18
  • Contact: Lin Dong
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (20873060, 20973091), the National Basic Research Program of China (973 Program, 2010CB732300), and Jiangsu Science and Technology Support Program (SBE201100389).

Abstract:

The investigation of the interaction between the surface dispersed components and the supports is the key to understand the nature of catalytic reactions. A single metal oxide (CuO) and dual metal oxides (CuO-Mn2O3, CuO-CoO, etc.) were supported on γ-Al2O3 to produce model catalysts. The dispersion behavior of these metal oxides on the surface of γ-Al2O3 and some physicochemical properties were explained using the Incorporation Model. These properties were considered together with their catalytic performances in CO+O2 and NO+CO model reactions to explore "composition-structure-property" relationships. A possible reaction mechanism involving surface synergetic oxygen vacancy on the supported dual metal oxide catalysts was proposed to approach the nature of NO reduction by CO.

Key words: γ-Alumina support, Supported metal oxide catalyst, Surface interaction, Incorporation Model, Surface synergetic oxygen vacancy