钙钛矿催化剂用于氨选择性还原氮氧化物的研究进展  

Perovskite catalysts for selective catalytic reduction of NOx with NH3

作　　者：拓凯 张朋 王利[3] 黄宇[1,3] TUO Kai;ZHANG Peng;WANG Li;HUANG Yu(Institute of Earth Environment,Chinese Academy of Sciences,State Key Laboratory of Loess and Quaternary Geology,Xi’an 710061,China;China University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Aerosol Chemistry and Physics,Chinese Academy of Sciences,Xi’an 710061,China)

机构地区：[1]中国科学院地球环境研究所/黄土与第四纪地质国家重点实验室,西安710061 [2]中国科学院大学,北京100049 [3]中国科学院气溶胶化学与物理重点实验室,西安710061

出　　处：《华中农业大学学报》2020年第5期26-34,共9页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金项目(51878644)。

摘　　要：氨选择性催化还原氮氧化物(NOx)技术是目前应用较为广泛的催化脱硝技术,钙钛矿材料因其独特的结构、良好的稳定性且环保无害的特点成为选择性催化还原NOx领域的研究热点。本文综述了近年来国内外关于钙钛矿NH3-SCR催化剂的研究进展,较为全面地对钙钛矿催化剂的主要类型、脱硝活性、构效关系进行了论述,同时介绍了钙钛矿在光辅助SCR技术这一全新领域的研究进展,并总结了钙钛矿催化剂的NH3-SCR反应机制,对该领域未来可能的发展方向和研究目标进行了展望。Ammonia selective catalytic reduction of nitrogen oxides(NOx)technology with V2O5-WO3(MoO3)/TiO2 as the core catalyst is currently widely used.But it has many problems such as narrow and high-temperature window,easy to poison by alkali inactivation,vanadium's biological toxicity and secondary pollution to the environment,which require researchers to develop new efficient and environmentally friendly catalyst systems.Due to their unique structure,good stability and environmentally friendly characteristics,perovskite materials have become a research hotspot in the field of selective catalytic reduction of NOx.We reviewd the research progress of perovskite NH3-SCR catalysts at home and abroad in recent years,and comprehensively discussed the main types,denitrification activity and structure-activity relationship of perovskite catalysts.At the same time,the research progress of perovskite in the new field of photo photo-assisted SCR technology was introduced.In addition,we summarized the research on the NH3-SCR reaction mechanism of perovskite catalysts,and prospectd the possible future development directions and research goals of this field.

关 键 词：氨选择性催化还原 钙钛矿 催化剂 脱硝活性 氮氧化物(NOx) NH3-SCR反应机制 大气污染控制 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]