Fe基分子筛NH_(3)-SCR脱硝催化剂的研究进展  

Research progress in Fe-based molecular sieve NH_(3)-SCR denitration catalyst

作　　者：才博慧 安子静 王阅 杜妍 任利敏 殷成阳 Bohui Cai;Zijing An;Yue Wang;Yan Du;Limin Ren;Chengyang Yin(Institute of Catalysis for Energy and Environment,College of Chemistry and Chemical Engineering,Shenyang Normal University,Shenyang 110034,China;School of Chemistry,Dalian University of Technology,Dalian 116023,China)

机构地区：[1]沈阳师范大学化学化工学院,能源与环境催化研究所,沈阳110034 [2]大连理工大学化学学院,大连116023

出　　处：《中国科学：化学》2024年第12期2565-2579,共15页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(编号:22372020);沈阳市科技计划项目(编号:23-407-3-14);辽宁省高校基本科研项目(编号:LJ212410166048)资助项目。

摘　　要：近年来,氮氧化物(NO_(x))已经成为大气的主要污染源之一.研究发现,选择性催化还原技术(SCR)的脱硝效率可达90%以上,特别是以NH_(3)为还原剂的NH_(3)-SCR技术是目前非常有效且应用最为广泛的脱硝技术.本文综述了Fe基分子筛脱硝催化剂在NH_(3)-SCR反应中的研究进展,对其研究概况、制备方法、活性和稳定性的强化策略进行了总结概述,详细介绍了常见的Fe基分子筛催化剂如Fe-ZSM-5、Fe-Beta、Fe-CHA用于NH_(3)-SCR反应的概况.通过合成不同拓扑结构的Fe基分子筛催化剂,向Fe基分子筛催化剂中引入不同种类金属以及构建核壳结构等强化策略来提高Fe基分子筛催化剂的NH_(3)-SCR活性、水热稳定性以及抗中毒性能,最后对Fe基分子筛NH_(3)-SCR催化剂脱硝性能与抗中毒性能不断提升以及工业化应用等方面的未来发展方向进行了展望.In recent years,nitrogen oxides(NOx)have become a major source of environmental pollution in the atmosphere.It is found that the denitration efficiency of selective catalytic reduction(SCR)technology can reach over 90%,especially the NH_(3)-SCR technology with NH_(3)as the reducing agent,which is currently the most effective and widely used denitration technology.In this review,the research progress of Fe-based molecular sieve denitration catalysts in NH_(3)-SCR reaction was reviewed,and their research overview,preparation methods and activity and stability strengthening strategies were summarized.The common Fe-based molecular sieve catalysts such as Fe-ZSM-5,Fe-Beta and Fe-CHA used in NH_(3)-SCR reaction were introduced in detail.The NH_(3)-SCR activity,hydrothermal stability,and anti-poisoning performance of Fe-based molecular sieve catalysts were improved by strengthening strategies for synthesizing different topological structures of Fe-based molecular sieve catalysts,introducing different types of metals into Fe-based molecular sieve catalysts and constructing core-shell structures.Finally,the future development directions of Fe-based molecular sieve NH_(3)-SCR catalysts in terms of denitration efficiency and anti-poisoning performance,as well as industrial applications,were prospected.

关 键 词：铁基 分子筛 催化剂 氨气选择性催化还原 氮氧化物脱除 

分 类 号：O643.36[理学—物理化学] X701[理学—化学]