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Citation: LI Ji-Hua, JIANG Yi, WANG Juan-Yun, CHEN Jun-He, ZHANG Zhi-Qiang, WANG Huan-Yi. Catalytic Combustion of Benzene over the Cu-Mn-O/Ce/γ-Al₂O₃ Catalysts[J]. Chinese Journal of Applied Chemistry, ;2010, 27(2): 137-141. doi: 10.3724/SP.J.1095.2010.90044 shu

Catalytic Combustion of Benzene over the Cu-Mn-O/Ce/γ-Al₂O₃ Catalysts

a. Chengdu Organic Chemical Institute, Chinese Academy of Sciences, Chengdu 610041;
b. Graduate University of the Chinese Academy of Sciences, Beijing

Received Date: 13 January 2009
Revised Date: 14 May 2009

The catalytic combustion of (φ=3.6%) benzene during 200~500℃ was investigated on the supported Cu-Mn-O/Ce/Al₂O₃-TiO₂ catalysts prepared via different wet impregnation methods and characterized by X-ray diffraction(XRD),N₂ adsorption at liquid-nitrogen temperature(BET),H₂ temperature programmed reduction(H₂-TPR) and X-ray photoelectron spectroscopy(XPS) techniques. The results show that the 15% CuMn₂0_x/Al₂O₃-TiO₂ catalyst(ω(CuMn₂0_x)=15%) achieving 79% conversion of benzene at 300℃ presented higher activity than Cu/Al₂O₃-TiO₂ and Mn/Al₂O₃-TiO₂ catalysts. While,the 15% CuMn₂0_x -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 addition of CeO₂ in co-impregnation method can enhance the dispersion and interaction of components.
- copper and manganese oxides,
- ceria,
- benzene,
- catalytic combustion
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Catalytic Combustion of Benzene over the Cu-Mn-O/Ce/γ-Al₂O₃ Catalysts