Effect of Substitution of Cobalt for Iron in Sr4Fe6O13-δon the Catalytic Activity for Methane Combustion  

作　　者：Feng, Shaojie Wang, Zhenghong Yang, Pinghua 

机构地区：[1]School of Materials Science and Chemical Engineering, Anhui University of Architecture, Hefei, Anhui 230022, China [2]Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China

出　　处：《Chinese Journal of Chemistry》2011年第3期451-454,共4页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （No. 50442024） and the Natural Science Foundation of Education Agency of Anhui Province （No. KJ2009A023Z）.

摘　　要：A series of mixed oxides Sr4Fe6-xCoxO13-δ （x=0, 1, 2, 3, or 4） were prepared by sol-gel method and used for catalytic combustion of methane. The structural properties of oxides were characterized by XRD, TGA, and XPS. The layered intergrowth perovskite-like oxide Sr4FesCoO13 8 exhibits the highest catalytic activity for methane combustion under the experimental conditions. The enhanced catalytic activity of Sr4FesCoO13-δfor methane combustion could be attributed to the increased amount of oxygen vacancy caused by the partial substitution of cobalt for iron in the Sr4Fe6O13, which was confirmed by TGA and XPS.A series of mixed oxides Sr4Fe6-xCoxO13-δ （x=0, 1, 2, 3, or 4） were prepared by sol-gel method and used for catalytic combustion of methane. The structural properties of oxides were characterized by XRD, TGA, and XPS. The layered intergrowth perovskite-like oxide Sr4FesCoO13 8 exhibits the highest catalytic activity for methane combustion under the experimental conditions. The enhanced catalytic activity of Sr4FesCoO13-δfor methane combustion could be attributed to the increased amount of oxygen vacancy caused by the partial substitution of cobalt for iron in the Sr4Fe6O13, which was confirmed by TGA and XPS.

关 键 词：heterogeneous catalysis layered compounds Sr4Fe6-xCoxO13-δ METHANE 

分 类 号：O643.21[理学—物理化学] O643.36[理学—化学]