掺杂型钙钛矿氧化物催化燃烧VOCs的研究进展

Research Progress in Doped Perovskite Oxides for Catalytic Combustion of VOCs

催化燃烧法是一种高效、清洁的挥发性有机化合物(VOCs)末端治理技术,钙钛矿材料由于其特殊的结构、良好的催化性能、抗烧结能力以及较低的成本受到广泛关注。在钙钛矿结构中,A位元素起稳定结构的作用,B位元素对催化活性有较大影响。通过部分取代A位、B位或A和B位元素皆可进行钙钛矿结构的调控,实现对钙钛矿氧化物的催化活性、稳定性、抗中毒能力等性质的改善。综述了近年来国内外掺杂型钙钛矿氧化物催化燃烧VOCs的研究进展,对A位掺杂型钙钛矿氧化物、B位掺杂型钙钛矿氧化物以及A和B位元素同时掺杂型钙钛矿氧化物的结构,主要掺杂元素,处理污染物的类型分别进行阐述;同时对钙钛矿氧化物的稳定性、中毒性质做出分析,并对掺杂型钙钛矿催化剂催化燃烧VOCs的研究方向进行展望。

Catalytic combustion is a highly efficient,clean and non-secondary pollution volatile organic compounds(VOCs)terminal treatment technology.Perovskite has been widely concerned for its special structure,good catalytic performance,sintering resistance and low cost.In the structure of perovskite,A-site element plays a stabilizing role,while B-site element has a greater impact on the catalytic activity.The perovskite structure can be regulated by partially substituting the A-site,B-site or A,B-site elements,so that the activity,stability,anti-poisoning ability and other properties of perovskite oxides can be improved.This paper reviews the research progress in doped perovskite oxides for catalytic combustion of VOCs is reviewed at home and abroad in recent years,and the structure,main doping elements and types of pollutants of A-site doped perovskite oxides,B-site doped perovskite oxides and A and B-site co-doped perovskite oxides are also described,respectively.Meanwhile,the stability and toxic properties of perovskite oxides are analyzed,and the research direction of catalytic combustion of VOCs with doped perovskite oxides as catalyst is prospected.