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

张桂臻  赵震  刘坚  徐俊峰  荆延妮  段爱军  姜桂元  
【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 catalyst La0.9K0.1CoO3 was the best candidate catalyst for soot combustion,the activity of which was as good as supported Pt catalysts.

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