Kinetics study on catalytic wet air

Kinetics study on catalytic wet air oxidation of phenol by several metal oxide catalysts

Abstract： Four metal oxide catalysts composed of copper (Cu), stannum (Sn), copper-stannum (Cu-Sn) and copper-cerium(Cu-Ce) respectively were prepared by the co-impregnation method, and γ-alumina(γ-Al2O3) is selected as support. A first-order kinetics model was established to study the catalytic wet air oxidation of phenol at different temperature when these catalysts were used. The model simulations are good agreement with present experimental data. Results showed that the reaction rate constants can be significantly increased when catalysts were used, and the catalyst of 6% Cu-10%Ce/γ-Al2O3 showed the best catalytic activity. This is consistent with the result of catalytic wet air oxidation of phenol and the COD removal can be arrived at 98.2% at temperature 210℃, oxygen partial pressure 3 MPa and reaction time 30 min. The activation energies of each reaction with different catalysts are nearly equal, which is found to be about 42 kJ/mol and the reaction in this study is proved to be kinetics control. 作 者： WAN Jia-feng    FENG Yu-jie    CAI Wei-min    YANG Shao-xia    SUN Xiao-jun   作者单位： WAN Jia-feng,FENG Yu-jie,YANG Shao-xia(School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China)

CAI Wei-min(School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China;School of Environmental Science and Technology, Shanghai Jiaotong University, Shanghai 200240, China)

SUN Xiao-jun(School of Chemistry and Environmental Engineering, Harbin University of Science and Technology, Harbin 150080, China) 

期 刊： 环境科学学报(英文版)  ISTICSCI   Journal： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2004, 16(4)  分类号： X703 O643.36  Keywords： catalytic wet air oxidation    catalyst    phenol   

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