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Preparation and Characterization of Perovaskitelike Compounds La4BaCu5-x-yFexCoyO13+δwith Doping in the "B"Position

HUANG Xuehui,XIA  Ying, ZHANG  Lili ,YING Bingkun

(Dept. of Mater. Sci. & Eng., Wuhan University of Technology, Wuhan Hubei 430070, China)

Abstract:A series of perovskite-like catalysts La4BaCu5-x-yFexCoyO13+δ were prepared by the sol-gel method at lower temperature,and then analyzed by TG-DTA, XRD, SEM and BET. The results indicated that the catalysts obtained were composite oxides with perovskite-type structure. Meanwhile, their relative catalytic behaviors were characterized by O2-TPD, the O2-desorption rate of catalysts increased through the partial replacement of Co at B site.

Keywords:perovskite-like, sol-gel, O2-TPD


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