Abstract：The three-element catalyst CuO- CeO2/γ-Al2O3 was prepared by layering and mixing impregnation method, in which CeO2 was chosen as the aids, γ-Al2O3 as the substrate, CuO as the active component. TD-DTA and XRD was carried out to investigate the effect of Ce on the stability of the substrate and the activated substance, CuO at high temperature. The results showed that the doping of Ce restrained effectively the phase change of substrate from γ-Al2O3 to α-Al2O3 and the formation of CuAl2O4 , which was produced by the reaction between CuO and Al2O3 during the process of wet air oxidation. The degradation experiment of phenol wastewater showed the doping of Ce can improve the activity of catalyst well. The catalyst with Cu∶Ce∶γ-Al2O3=6∶6∶100 (mass percentage) has the highest catalytic activity among them, the COD removal efficiency of which can reach 91.31% in 30 minutes.
2005, Vol. 23 
