Selective catalytic reduction of NOx with NH3:opportunities and challenges of Cu-based small-pore zeolites

作     者：Yulong Shan Jinpeng Du Yan Zhang Wenpo Shan Xiaoyan Shi Yunbo Yu Runduo Zhang Xiangju Meng Feng-Shou Xiao Hong He Yulong Shan;Jinpeng Du;Yan Zhang;Wenpo Shan;Xiaoyan Shi;Yunbo Yu;Runduo Zhang;Xiangju Meng;Feng-Shou Xiao;Hong He

作者机构：State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences College of Resources and Environment University of Chinese Academy of Sciences Center for Excellence in Regional Atmospheric Environment Institute of Urban Environment Chinese Academy of Sciences State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Energy Environmental Catalysis Beijing University of Chemical Technology Key Laboratory of Applied Chemistry of Zhejiang Province Department of Chemistry Zhejiang University 

出 版 物：《National Science Review》 (国家科学评论(英文版))

年 卷 期：2021年第8卷第10期

页      面：139-158页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (21637005  21906172  51822811 and 51978640) 

主　　题：environmental catalysis Cu-SSZ-13 NH3-SCR reaction mechanism small-pore zeolites 

摘      要：Zeolites, as efficient and stable catalysts, are widely used in the environmental catalysis field. Typically,Cu-SSZ-13 with small-pore structure shows excellent catalytic activity for selective catalytic reduction of NOxwith ammonia（NH3-SCR） as well as high hydrothermal stability. This review summarizes major advances in Cu-SSZ-13 applied to the NH3-SCR reaction, including the state of copper species, standard and fast SCR reaction mechanism, hydrothermal deactivation mechanism, poisoning resistance and synthetic methodology. The review gives a valuable summary of new insights into the matching between SCR catalyst design principles and the characteristics of Cu2+-exchanged zeolitic catalysts, highlighting the significant opportunity presented by zeolite-based catalysts. Principles for designing zeolites with excellent NH3-SCR performance and hydrothermal stability are proposed. On the basis of these principles, more hydrothermally stable Cu-AEI and Cu-LTA zeolites are elaborated as well as other alternative zeolites applied to NH3-SCR. Finally, we call attention to the challenges facing Cu-based small-pore zeolites that still need to be addressed.