一种钙钛矿复合氧化物负载钯催化剂的制备方法

The preparation process of composite perovskite oxide loaded palladium catalyst includes the main steps of: compounding soluble metal salt solution with soluble salt of La, Co and Pd as material; dropping metal salt solution into citric acid as complexing agent to form sol; heating sol at 50-95 deg.c while stirring to obtain gel; drying at 110-160 deg.c for 10-24 hr and roasting at 600-1000 deg.c for 3-24 hr; and reduction processing of the obtained perovskite oxide. The catalyst is determined via X-ray powder diffraction process, hydrogen adsorption process and programmed heating-up desorption process to obtain its crystal phase, surface Pd density and oxygen adsorbing performance. The prepared catalyst is perovskite oxide loaded palladium catalyst with oxygen fault, and this structure has synergist effect of perovskite and Pd and excellent catalytic activity.