EFFECTS OF RARE EARTH METAL CERIUM IN THE CATALYSTS FOR CATALYTIC WET AIR OXIDATION ON ITS PERFORMANCE

CuO/ γ Al 2O 3,CuO CeO 2/ γ Al 2O 3 and CuO ZnO CeO 2/ γ Al 2O 3 complex oxide catalysts for catalytic wet air oxidation of H acid as model reactant were prepared by dipper precipitation me thods .The presence of Ce in the catalysts had promotion effect on the activity of the catalyst,increased the degradation speed of small molecule carboxylic acids,which were the intermediate pro ducts of catalytic wet air oxidation process,and raised the pH of ultimate reaction solution,decreased leaching amount of Cu in the catalysts.The rare earth element Ce could uniform size of crystals and distribution of pore and increased the size of pore in the catalysts.The doping Ce in catalysts improved the catalytic activity and stability.