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.
出处
《贵金属》
CAS
CSCD
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)