非晶态配合物法制备钙钛矿型纳米粉体催化剂及其CO催化氧化性能  

Synthesis of Nanosized Perovskite Powder Using Amorphous Complex Method and Their CO Catalytic Oxidation Performance

作　　者：王海[1] 朱永法[2] 谭瑞琴[1] 曹立礼[1] 

机构地区：[1]清华大学化学系,北京100084 [2]清华大学一碳化工国家重点实验室,北京100084

出　　处：《化学学报》2003年第1期13-16,共4页Acta Chimica Sinica

基　　金：国家自然科学基金 (No.2 0 0 71 0 2 1 );教育部优秀青年教师资助计划资助

摘　　要：运用非晶态配合物法合成了LaCoO3,La0 .9Sr0 .1CoO3,LaCo0 .3Mn0 .7O3和La2 CuO4 钙钛矿型纳米粉体催化剂 ,研究了其CO催化氧化活性及SO2 中毒性能 ,初步推断了中毒机理 .结果表明用该方法可以在较低温度下合成具有纯钙钛矿结构的纳米粉体催化剂 ,该催化剂具有很好的CO催化氧化活性 ,其中LaCoO3系列的催化活性优于La2 CuO4 .所有催化剂经SO2 中毒后催化活性均有所下降 .The nanosized perovskite powders of LaCoO3, La-0.9 Sr-0.1 CoO3, LaCo0.3 Mn-0.7 O-3 and La2CuO4 were prepared via amorphous heteronuclear complex precursor at a fairly low temperature. The catalytic performances for CO oxidation of the catalysts have been tested. The results show that the nanosized catalysts have excellent CO catalytic abilities and the LaCoO3 series has better performance than that of the La2CuO4 catalyst. The catalytic performance decreased after the catalyst was poisoned by SO2. The destruction of the perovskite structure was probably the main reason of deactivation.

关 键 词：非晶态配合物法 制备 纳米粉体 钙钛矿型催化剂 CO 催化氧化 SO2 中毒 一氧化碳 催化性能 

分 类 号：TQ426[化学工程]