Ce对SCR催化剂的脱硝及抗中毒性能影响的研究进展  

Research Progress of Ce Modification on Denitrification Performance and Anti-Poisoning of SCR Catalyst

作　　者：游梦云 巫树锋 张彰[2] 王玉斌 YOU Mengyun;WU Shufeng;ZHANG Zhang;WANG Yubin(Petrochina Petrochemical Research Center Louzhou Chemical Research Center,Lanzhou Gansu 730060,China;College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou Gansu 730060,China)

机构地区：[1]中国石油石油化工研究院兰州化工研究中心,甘肃兰州730060 [2]西北师范大学化学化工学院,甘肃兰州730060

出　　处：《辽宁化工》2025年第1期137-141,共5页Liaoning Chemical Industry

基　　金：中国石油科学研究与技术开发项目(项目编号:22-LH-73-01)。

摘　　要：NH_(3)选择性催化还原(NH_(3)-SCR)是减少燃煤工业、柴油发动机等氮氧化物(NO_(x))排放的最有效技术,其核心是SCR脱硝催化剂。然而,烟气中的金属杂质及硫化合物等会造成催化剂的失活,所以有必要对现有的SCR脱硝催化剂进行改性。由于Ce具有独特的氧化还原、储氧和酸碱性能,被广泛用作载体、启动剂和促进剂,在SCR催化剂的研究中是一类常用助剂。本文介绍了SCR催化剂在脱硝反应中的反应机理,以及Ce对SCR催化剂在抗中毒方面和脱硝性能提升等方面所起到的重要作用。NH_(3) selective catalytic reduction (NH_(3)-SCR) is the most effective technology to reduce nitrogen oxide (NO_x) emissions from coal-fired industries and diesel engines,the core of which is SCR denitrification catalyst.However,metal impurities and sulfur compounds in flue gas can cause the deactivation of catalysts,so it is necessary for the existing SCR denitration catalyst for modification.Because of its unique REDOX,oxygen storage and acid-base properties,Ce is widely used as a carrier,initiator and accelerator,and is a common additive in the research of SCR catalysts.This paper introduces the mechanism of SCR catalyst in denitration reaction,and the important role of Ce on the anti-poisoning and denitration performance of SCR catalyst.

关 键 词：CE SCR脱硝催化剂 脱硝活性 抗中毒 

分 类 号：TQ016[化学工程]