锰基NH_(3)-SCR脱硝催化剂的研究  

Study on manganese-based NH_(3)-SCR denitrification catalysts

作　　者：杜文亚 郑子文 郭锐 赵加波 徐海健 谢华清 Du Wenya;Zheng Ziwen;Guo Rui;Zhao Jiabo;Xu Hajan;Xie Huaqing(Chongqing CISDI Thermal&Environmental Engineering Co.,Ltd.,Chongqing 401120,China;School of metallurgy,Northeastern University,Shenyang 110819,China;Shandong Yiran Environmental Protection Technology Co.,Ltd.,Jinan 250200,China)

机构地区：[1]重庆赛迪热工环保工程技术有限公司,重庆401120 [2]东北大学冶金学院,沈阳110819 [3]山东一然环保科技有限公司,济南250200

出　　处：《材料与冶金学报》2025年第2期188-199,共12页Journal of Materials and Metallurgy

基　　金：辽宁省储能与能源利用技术重点实验室基金项目(CNWK202305)。

摘　　要：氨法选择性催化还原(NH_(3)-SCR)脱硝技术是目前工业中应用最多的烟气脱硝技术,受限于钒钨催化剂较高的工作温度,低温锰基催化剂的制备逐渐成为研究热点.本文中先对锰基催化剂类型的研究现状进行总结,发现当前主流的复合型和负载型锰基催化剂均具有良好催化性能和较大发展潜力,但缺乏其反应过程的微观剖析.然后,对当前锰基催化剂NH_(3)-SCR反应机理的研究进行梳理,发现E-R(Eley-Rideal)机理和L-H(Langmuir-Hinshelwood)机理共存于NH_(3)-SCR脱硝过程中是当前被普遍认可的观点.随着计算机技术的进步和密度泛函理论(density functional theory,DFT)的完善,基于DFT的量子化学计算方法被越来越多地用于催化科学领域,为此总结了DFT计算在锰基催化剂NH_(3)-SCR反应机理中的应用现状,最后对未来催化剂机理探析进行了展望.NH_(3) selective catalytic reduction(NH_(3)-SCR)denitration technology is the most widely used flue gas denitration technology in industry at present.Limited by the high working temperature of vanadium-tungsten catalyst,the preparation of low-temperature manganese-based catalyst has gradually become a research hotspot.First,the research status of manganese-based catalyst types is summarized,and it is found that the current mainstream composite and supported manganese-based catalysts have good catalytic performance and great development potential,but they lack microscopic analysis of their reaction processes.Subsequently,the current research on the reaction mechanism of manganese-based catalysts NH_(3)-SCR was sorted out,and it was found that the coexistence of E-R(Eley-Rideal)mechanism and L-H(Langmuir-Hinshelwood)mechanism in the NH_(3)-SCR denitration process is currently generally recognized.view.With the advancement of computer technology and the improvement of Density functional theory(DFT),quantum chemical calculations based on DFT are increasingly used in the field of catalytic science.For this reason,the paper finally discusses the application of DFT theory in manganese-based catalyst NH_(3)-SCR.The research status of the reaction mechanism is summarized,and the future analysis of catalyst mechanism is prospected.

关 键 词：SCR 锰基催化剂 反应机理 密度泛函理论 

分 类 号：X701[环境科学与工程—环境工程] O643[理学—物理化学]