新型稀土储氧材料的性能及在三效催化剂中的应用  

Performance of Advanced Rare Earth Oxygen Storage Materials and Application in Three-way Catalysts

作　　者：赵明[1] 龚茂初[1] 蔡黎[1] 张怀红[1] 张丽娟[1] 毛小波[1] 陈耀强[1] 

机构地区：[1]四川大学化学学院催化材料研究所,四川成都610064

出　　处：《贵金属》2006年第2期18-21,共4页Precious Metals

基　　金：国家自然科学基金重点项目(20333030);国家自然科学基金面上项目(20273043)

摘　　要：采用共沉淀法制备了铈锆复合氧化物CeO2-ZrO2-Y2O3(CZ-Y)和CeO2-ZrO2(CZ),对其进行了BET、TPD和储氧量(OSC)的表征,并考察了这两种铈锆复合氧化物对Pt-Rh型三效催化剂性能的影响。结果表明,含CZ-Y的催化剂具有较好的低温活性和抗老化性能。CeO2-ZrO2-Y203（CZ-Y） and CeO2-ZrO2（CZ）composite oxides were prepared by coprecipitation technique, TPD, BET and oxygen storage capacity（OSC） investigations were carried out on samples, The influence of the composite oxides on the catalytic activity of Pt-Rh three-way catalysts was investigated. The results showed that the catalysts containing CZ-Y soild solutions have high activity and high thermostability compared with that containing CZ solid solution.

关 键 词：金属材料 稀土储氧材料 CZ—Y CZ 三效催化剂 

分 类 号：TQ426.8[化学工程]