汽车尾气净化催化剂─—稀土钙钛矿型复合氧化物

MOTORCAR TAIL GAS PURIFICATION CATALYST──PEROVSKITE TYPE RARE EARTH COMPLEX OXIDE

选择稀土钙钛矿型复合氧化物作汽车尾气净化催化剂．在试验基础上，筛选试制出最佳组分的催化剂．经汽车台架模拟试验表明，净化效果明显．对影响催化剂活性的因素进行了研究讨论，阐述了钙钛矿型结构及其畸变、晶格缺陷、元素价态与催化活性之间的关系．

Perovskite type rare earth complex oxide has been chosen to be the catalyst for the purification of motorcar tall gas. On the basis of tests,the catalyst with the optimum constituents has been screened out and trial-produced.After the simulation test on the motorcar saddle piece, it is indicated that the purification effect is obvious.Factors that influence the catalyst activities have been studied and discussed.Relationship between the catalyst activities and the structure, lattice defect,element valence and clement state of the perovskite type RE complex oxide is expounded.