贵金属催化剂上氢气选择性催化还原NO_(x)  

Selective Catalytic Reduction of NO_(x)by Hydrogen over Noble Metal Catalysts

作　　者：贾斌 刘晓磊[1,2] 刘志明 Bin Jia;Xiaolei Liu;Zhiming Liu(State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Beijing Center for Environmental Pollution Control and Resource Recovery,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029 [2]北京化工大学北京市环境污染控制与资源化工程研究中心,北京100029

出　　处：《化学进展》2022年第8期1678-1687,共10页Progress in Chemistry

基　　金：国家自然科学基金项目(No.21876009);中央高校基本科研业务费项目(JD2110)资助。

摘　　要：NO_(x)的控制对于改善大气环境质量具有重要意义,而氢气选择性催化还原(H_(2)-SCR)NO_(x)作为一种高效环保的脱硝技术而备受关注。本文总结概述了近年来贵金属催化剂在H_(2)-SCR脱硝反应中的研究进展,首先介绍了H_(2)-SCR反应机理,在此基础上分别论述了影响贵金属催化剂性能的因素(如活性组分、载体类型、助剂添加及组分存在形式等)及催化剂结构与性能的构效关系。最后,针对目前存在的问题展望了H_(2)-SCR脱硝未来的发展方向。The control of NO_(x) is very important for the air quality improvement.Selective catalytic reduction of NO_(x) by hydrogen(H_(2)-SCR)has attracted much attention as an efficient and environmentally benign deNO_(x) technology.In this review,we summarize the research development in the H_(2)-SCR of NO_(x) over noble metal catalysts.The typical H_(2)-SCR reaction mechanisms are introduced first.Then the factors affecting the H_(2)-SCR performance of noble metal catalysts,such as the active metal,support type,the added promoter and the nature of active metal,and the structure-activity relationship have been discussed.Finally,the challenges and the prospects for future development of H_(2)-SCR catalyst are proposed.

关 键 词：氮氧化物 H_(2)-SCR 贵金属催化剂 反应机理 

分 类 号：O643.3[理学—物理化学] X511[理学—化学]