Preparation and methane combustion catalytic activity of nanometer perovskite-type complex oxides La1-xSrxFeO3 and Lafe1-yMnyO3

Perovskite-type complex oxides （ABO3） have a well-defined structure and high thermostability, and the oxidation state of metal ions as well as oxygen vacancies can be changed through partial substitution of metal ions at A or B site, so they are suitable model compounds for the study of the relationship between the solid state chemistry and the catalytic propertiest. LaFeO3 and its partially cation-substituted oxide system prepared by solid-state reaction have been applied to the complete oxidation of methane, carbon