Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (05): 1163-1168.doi: 10.3866/PKU.WHXB20110443

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Preparation of CuO-Ce0.6Zr0.4O2 by Microwave Heating Decomposition and Its Catalytic Property for CO Oxidation

YANG Zhi-Qiang, MAO Dong-Sen, WU Ren-Chun, YU Jun, WANG Qian   

  1. School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 200235, P. R. China
  • Received:2010-12-22 Revised:2011-02-14 Published:2011-04-28
  • Contact: MAO Dong-Sen E-mail:dsmao@sit.edu.cn, dsmao1106@yahoo.com.cn
  • Supported by:

    The project was supported by the Leading Academic Discipline Project of Shanghai Education Committee, China (J51503).

Abstract:

A series of CuO-Ce0.6Zr0.4O2 catalysts with different contents (0-25%, w) of CuO were prepared by microwave heating decomposition and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption-desorption (BET), and temperature-programmed reduction with hydrogen (H2-TPR). The activities of the catalysts for CO oxidation were evaluated using a microreactor-gas chromatograph system. The results show that the CuO-Ce0.6Zr0.4O2 catalyst exhibits the best catalytic activity for CO oxidation at a CuO content of 15%. Three copper species are present in the catalysts, i.e., highly dispersed, small and large CuO particles. The highly dispersed and small CuO particles are responsible for the promotion of catalytic activity while the large CuO particles inhibit catalytic activity.

Key words: Microwave heating, Cu(NH3)4(OH)2, CuO-Ce0.6Zr0.4O2 catalyst, CO oxidation

MSC2000: 

  • O643