Macroporous perovskite-type complex oxide catalysts of La_(1-x)K_xCo_(1-y)Fe_yO_3 for diesel soot combustion  

作　　者：张桂臻 赵震 刘坚 徐俊峰 荆延妮 段爱军 姜桂元 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum

出　　处：《Journal of Rare Earths》2009年第6期955-960,共6页稀土学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (20833011 and 20803093);the 863 Project of China (2006AA06Z346)

摘　　要：A facile procedure was carried out to prepare macroporous perovskite-type complex oxide catalysts of La1–xKxCo1–yFeyO3(x=0,0.1,y=0,0.1) by using the combined method of organic ligation and solution combustion.This method could ensure the formation of the desired macroporous structures and the desired crystal phases of the prepared catalysts.It was found that the macroporous catalysts showed higher catalytic activities for soot combustion than that of the corresponding nanometric samples,and the macroporous ...A facile procedure was carried out to prepare macroporous perovskite-type complex oxide catalysts of La1–xKxCo1–yFeyO3(x=0,0.1,y=0,0.1) by using the combined method of organic ligation and solution combustion.This method could ensure the formation of the desired macroporous structures and the desired crystal phases of the prepared catalysts.It was found that the macroporous catalysts showed higher catalytic activities for soot combustion than that of the corresponding nanometric samples,and the macroporous ...

关 键 词：macroporous perovskite-type oxides diesel engine exhaust SOOT catalytic combustion rare earths 

分 类 号：O643.36[理学—物理化学]