非电行业烟气氮氧化物催化净化  

NO_(x) reduction catalysts for non-electrical industries

作　　者：韩璐蓬 张登松[1] HAN Lupeng;ZHANG Dengsong(Department of Chemistry,College of Sciences,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学理学院化学系,上海200444

出　　处：《自然杂志》2022年第4期287-300,共14页Chinese Journal of Nature

基　　金：国家自然科学基金资助项目(22125604、22106100);国家重点研发计划课题(2021YFB3500602)。

摘　　要：氮氧化物(NO_(x))严重威胁人体健康和生态环境。随着火电行业烟气NO_(x)初步实现超低排放,非电行业烟气NO_(x)排放控制成为重中之重。NH_(3)选择性催化还原NO_(x)是最有效的NO_(x)控制技术。非电行业烟气含有SO_(2)、碱性物质以及重金属等杂质,易导致催化剂中毒失活。针对NO_(x)净化催化剂低温活性不足、SO_(2)中毒、碱金属中毒以及复合中毒等关键难题,文章综述了各类低温抗中毒NO_(x)净化催化剂的研究进展,总结了提高催化剂的低温活性、抗SO_(2)中毒、抗碱金属中毒以及抗复合中毒的策略。文章为开发低温抗中毒NO_(x)净化催化剂提供了研究思路,为推进NO_(x)净化催化剂在非电行业烟气NO_(x)净化中的实际应用提供理论指导。Nitrogen oxides(NO_(x))threaten to the human health and ecological environment.As the gradual realization of ultra-low emission of NO_(x) in thermal power industries,the emission reduction of NO_(x) in non-electrical industries becomes urgent.Selective catalytic reduction of NO_(x) by NH_(3) is the most effective NO_(x) control technology.The flue gas of non-electrical industries generally contains SO_(2),alkali and heavy metals that easily lead to the catalyst inactivation.In view of the key problems of NO_(x) reduction catalysts such as the poor low-temperature activity,SO_(2)-poisoning,alkali-poisoning,and the multiple poisonings,this paper reviews the research progress of various low-temperature poisoning-resistant NO_(x) reduction catalysts,and summarizes the strategies for improving the low-temperature activity,SO_(2)-resistance,alkali-resistance,and multiple resistance of catalysts.This paper proposes research strategies for developing low-temperature poisoning-resistant NO_(x) reduction catalysts,and provides imperative guidance for the practical application of NO_(x) reduction catalyst in non-electrical industries.

关 键 词：环境催化 氮氧化物还原 非电行业 抗中毒 

分 类 号：X701[环境科学与工程—环境工程] O643.36[理学—物理化学]