Synthesis, Characterization and Catalytic Properties of La4BaCu5-xNixO13+δ (x=0, 1, 2, 3, 4, 5)

A series of perovskite-like catalusts La4BaCu5-xNixO13＋δ (x=0,1,2,3,4,5) were prepared by the citrate method, the structures, forms, properties, and defect structures were studied by means of XRD, SEM, BET and TPD measurements. Meanwhile, their catalytic activities were evaluated by the studying of CO, CH4 oxidation. La4BaCu2Ni3O13+δ shows the highest catalytic activity.