铁基氨气选择性催化还原(NH3-SCR)催化剂性能的研究进展  

Research Progress in Performance of Iron-Based Ammonia Selective Catalytic Reduction(NH3-SCR)Catalysts

作　　者：张浩南 陈耿[1] 朱颖颖[1] Zhang Haonan;Chen Geng;Zhu Yingying(Faculty of Maritime and Transportation,Ningbo University,Ningbo,Zhejiang 315211,China)

机构地区：[1]宁波大学海运学院,浙江宁波315211

出　　处：《化学世界》2023年第1期12-21,共10页Chemical World

基　　金：宁波市自然科学基金(No.2018A610281);宁波大学研究生科研创新基金(No.IF2020133)资助项目。

摘　　要：氨气选择性催化还原(NH3-SCR)技术被广泛应用于净化废气中的NOx。介绍了多种以氧化铁作为主要活性成分的NH3-SCR催化剂的性能以及掺杂改性金属对氧化铁的低温活性的影响。阐述了金属氧化物、碳基材料、沸石等载体材料对反应催化活性的影响并对比了不同载体的特点。在研究铁基催化剂表面NH3-SCR反应和硫化中毒机理的基础上,对改良氧化铁催化剂以增强其抗硫能力的可行方案进行了探讨。Ammonia selective catalytic reduction(NH3-SCR)technology is widely used to purify NOxfrom gas.The properties of various NH3-SCR catalysts with iron oxide as main active component and the influence of doping modified metal on the low temperature activity of iron oxide are introduced.The effects of metal oxide,carbon-based material,zeolite and other support materials on the catalytic activity are introduced and the characteristics of different support materials are compared.Finally,on the basis of NH3-SCR reaction on the surface of iron based catalyst and the mechanism of sulfurization poisoning,the feasible scheme of improving iron oxide catalyst to enhance its sulfur-resistant ability was discussed.

关 键 词：选择性催化还原 铁 氮氧化物 烟气脱硝 

分 类 号：X511[环境科学与工程—环境工程]