Preparation and characterization of rare earth composite catalytic materials for conversion of exhaust from natural gas automobiles

摘要：

　　A series of rare-earth composite catalytic material LZ1,LZ2 and LZ3 that contains mixture of La0.9Sr0.1Co0.5Mn0.5O3 and Ce0.7Zr0.3O2 in different proportion (3∶7, 5∶5, 7∶3)were prepared by a sol-gel method and characterized by X-ray diffraction (XRD), specific surface analysis (BET), Transmission electron microscopy (TEM) and temperature programmed reduction (TPR).The results indicated that in LZ3, a perfect crystal structure of perovskite and a cubic fluorite structure were formed.Besides LZ3 presented scattered spherical granules with a particle size of about 30 nm and a specific surface area of 20.9870 m2/g.The temperature of reduction peak was lowest (490℃) and peak area was larger, so it had the best catalytic activity for methane combustion.

关键词： composite materials rare earth catalysis natural gas

作者: YanKun Yuan Gang Xue Saifei Wang Xueliang Zhang

作者单位: Institute of Power Source and Ecomaterials Science,Hebei University of Technology,Tianjin 300130,China

会议类型: 国际会议

会议名称: 2012 China Functional Materials Technology and Industry Forum(2012中国功能材料科技与产业高层论坛)(CFMTIF2012)

会议地点: 昆明

会议语种:英文

页码: 413-418

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）