The Structure and Catalytic Activity of ABO_3 Type Mixed Rare-earth Oxide La_(1-x)Sr_xNiO_3 of Nickel System

The relations between solid state behavior and ammonid oxide and catalytic property of  La 1-x Sr x NiO 3  catalyst was investigated in details.For the series of LaNiO 3 with the Sr 2+ content,in the range of x≤0.3, La 1-x Sr x NiO 3  catalyst could keep the single phase with perovskite type structure and the oxygen Vacancy increses.In the range of x0.3,perovskite type structure resolves into new phase La 2NiO 4.The catatyst is a importent factor for Ni 3+ ion and the catalytic activity in the ammonia Oxidation.