EFFECTS OF ZrO_2 ON CATALYTIC PROPERTIES OF MESOPOROUS CuO/CeO_2 FOR CO PREFERENTIAL OXIDATION IN H_2-RICH GASES

A Series of different ZrO2 content mesoporous CeO2-ZrO2 mixed oxides were synthesized by using sol-gel method,12% content CuO were supported on mesoporous CeO2-ZrO2 and used for CO preferential oxidation(PROX) in H2-rich gases.The samples were characterized by means of the N2 physical adsorption、X-ray diffraction and Temperature Programmed Reduction techniques to study the textural properties and crystalline structure of the 12%CuO/CeO2-ZrO2.After Activity Evaluation,it was found that 12%CuO/CeO2-ZrO2 exhibited very good catalytic performance for the PROX reaction and related to the percent of ZrO2.