钙钛矿型复合氧化物LaFeO_(3)和SrFeO_(3)的催化性能  

The catalytic beharior of perovskite type mixed oxides LaFeO_(3) and SrFeO_(3)

作　　者：王俊珍[1] 付希贤[1] 白树林[1] 杨秋华[1] 孙艺环[1] 曾淑兰[1] 

机构地区：[1]天津大学化学系,天津300072

出　　处：《工业水处理》2000年第12期15-16,25,共3页Industrial Water Treatment

基　　金：国家自然科学基金资助项目,批准号59772019

摘　　要：采用柠檬酸络合法合成了钙钛矿型复合氧化物LaFeO3 和SrFeO3,并以其为催化剂对几种水溶性染料溶液进行降解实验。结果表明 ,LaFeO3 和SrFeO3 均有较强的催化性能 ,且SrFeO3 的催化活性明显高于LaFeO3。这主要与A位离子的种类有关 ,A位离子不仅改变了B位离子的价态和电子结构 ,同时还影响到A—O、B—O之间的结合能。Perovskite type mixed oxides LaFeO 3 and SrFeO 3 are prepared by citric acid complex method. It is used in catalytic degradation of water soluble dyes as catalyst. The results show that perovskite type LaFeO 3 and SrFeO 3 have high catalytic beharior, but the catalytic beharior of SrFeO 3 is higher than that of LaFeO 3, which is mainly related to the species of A site ions. A ions not only change the valence and electric structure of B ions, but also have effect on the combination energy of A-O、B-O

关 键 词：钙钛矿型复合氧化物 LaFeO_(3) SrFeO_(3) 催化降解 氧空位 

分 类 号：X788.035[环境科学与工程—环境工程] X788.031