柴油机尾气NH_(3)-SCR催化剂的研究进展  

Research progress of NH_(3)-SCR catalysts for diesel exhaust

作　　者：王瑞丹[1] 马斯琦 杨林蛟 WANG Ruidan;MA Siqi;YANG Linjiao(Editorial Department,Shenyang Normal University,Shenyang 110034,China;School of Foreign Language,Shenyang Normal University,Shenyang 110034,China;College of Chemistry and chemical Engineering,Shenyang Normal University,Shenyang 110034,China)

机构地区：[1]沈阳师范大学学报编辑部,沈阳110034 [2]沈阳师范大学外国语学院,沈阳110034 [3]沈阳师范大学化学化工学院,沈阳110034

出　　处：《沈阳师范大学学报(自然科学版)》2024年第6期488-492,共5页Journal of Shenyang Normal University:Natural Science Edition

基　　金：辽宁省教育厅科学研究经费项目(LJC202004,LJC202005)。

摘　　要：长久以来,柴油机排放的氮氧化物(NO_(x))给人体健康和环境带来的危害已引起人们的极大关注。尾气后处理技术中的NH_(3)-SCR技术是有效净化柴油机尾气中NO_(x)的有效技术手段之一,该技术可实现对柴油机排放的NO_(x)的直接治理。综述了目前有关NH_(3)-SCR技术的反应机理,从贵金属催化剂、金属氧化物催化剂和分子筛催化剂的角度,详细论述了不同类型催化剂在催化消除NO_(x)方面的研究进展,并对目前NH_(3)-SCR催化剂在研究过程中出现的问题进行了阐述,提出了NH_(3)-SCR技术未来发展的相关建议。The harm of nitrogen oxides(NO_(x))emitted by diesel engines to human health and the environment has aroused great concern for a long time.The NH_(3)-SCR exhaust gas post-treatment technology is one of the effective technical means to effectively purify NO_(x)from diesel engine exhaust,which can realize the direct treatment of NO_(x)emitted by diesel engine.In this paper,the current reaction mechanism of NH_(3)-SCR technology was reviewed.The research progress of different types of precious metal catalyst,metal oxide catalyst and molecular sieve catalyst in catalytic removal of NO_(x)were discussed in detail,and the problems in the current research process of NH_(3)-SCR catalyst were described.Some suggestions for the future development of NH_(3)-SCR technology were put forward.

关 键 词：柴油机 氮氧化物 催化消除 催化剂 

分 类 号：O643.3[理学—物理化学]