Chinese Journal of Applied Chemistry ›› 2010, Vol. 27 ›› Issue (02): 137-141.DOI: 10.3724/SP.J.1095.2010.90044

• Full Papers • Previous Articles     Next Articles

Catalytic Combustion of benzene over Cu-Mn-O/Ce/γ-Al2O3-TiO2 Catalysts

LI Ji-Hua1,2, JIANG Yi1*, WANG Juan-Yun1, CHEN Jun-He1, ZHANG Zhi-Qiang1,2, WANG Huan-Yi1,2   

  1. (1.Chengdu Organic Chemical Institute,Chinese Academy of Sciences,Chengdu 610041;
    2.Graduate University of the Chinese Academy of Sciences,Beijing)
  • Received:2009-01-13 Revised:2009-06-16 Online:2010-02-10 Published:2010-02-10
  • Contact: JIANG Yi

Abstract:

The catalytic combustion of (φ=3.6%) benzene during 200~500℃was investigated on supported Cu-Mn-O/Ce/Al2O3 -TiO2catalysts prepared via different wet impregnation methods and characterized by X-ray diffraction (XRD)、N2 adsoption at liqiud-nitrogen temperature (BET)、H2 temperature programmed reduction (H2-TPR) and X-ray photoelectron sprectroscopy (XPS) techniques. The results showed that the 15%CuMn2Ox/Al2O3-TiO2(ω(CuMn2Ox)=15%) achieving 79% conversion of benzene at 300presented higher activity than Cu/Al2O3-TiO2 and Mn/Al2O3-TiO2 catalysts. However, the 15%CuMn2Ox-15%CeO2/Al2O3-TiO2 catalyst obtained by co-impregnation method attaining 81% conversion of benzene at 300℃ showed much higher catalytic activity than the catalyst prepared by two step impregnation. The adding of CeO2 in the co-impregnation method can enhance the dispersion and interaction of compounts.

 

Key words: copper and manganese oxides,ceria,benzene,catalytic combustion

CLC Number: