CHA型分子筛在柴油车NO_(x)排放控制的研究进展  

Research progress of CHA molecular sieve in NOx emission control of diesel vehicles

作　　者：任德志 于飞 常仕英 杨冬霞[1,2,3] 马江丽 赵云昆[1,2] REN De-zhi;YU Fei;CHANG Shi-ying;YANG Dong-xia;MA Jiang-li;ZHAO Yun-kun(State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,Kunming Institute of Precious Metals,Kunming 650106,China;State-Local Joint Engineering Laboratory of Precious Metal Catalytic Technology and Application,Kunming Sino-platinum Metals Catalysts Co.Ltd.,Kunming 650106,China;School of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650504,China)

机构地区：[1]昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室,昆明650106 [2]昆明贵研催化剂有限责任公司贵金属催化技术与应用国家地方联合工程实验室,昆明650106 [3]昆明理工大学环境科学与工程学院,昆明650504

出　　处：《贵金属》2022年第3期75-81,88,共8页Precious Metals

基　　金：国家自然科学基金(21862010);云南省重大科技专项(202102AB080007,2019ZE001-2,202002AB080001-1);云南省基础研究计划项目(2019FD138);移动源污染排放控制技术国家工程实验室开放基金(NELM2020C03)。

摘　　要：CHA型分子筛具有比表面积大、孔隙结构发达、酸性可调控等优势,是柴油车NO_(x)排放控制最具有发展潜力的载体材料。基于对50多篇文献的分析,综述了近20年来CHA型分子筛在柴油车用PNA和SCR催化材料中的应用研究进展,阐述了活性组分、分子筛结构性质、尾气组分等3个方面对CHA型分子筛载体催化剂性能的影响,对CHA型分子筛的研究方向进行了展望。CHA molecular sieve is the most promising carrier material for NOemission control of diesel vehicles due to its large specific surface area,developed pore structure,and adjustable acidity.Based on the analysis of more than 50 articles,the research progress of CHA molecular sieve in PNA and SCR catalytic materials for diesel vehicles in the past 20 years was reviewed.The effects of active components,molecular sieve structure properties,and gas components on the performance of the catalyst were described.The research direction of CHA molecular sieve was prospected.

关 键 词：柴油车 NO_(x)排放控制 CHA型分子筛 PNA材料 SCR催化剂 

分 类 号：X511[环境科学与工程—环境工程] TQ426[化学工程]