化工进展 ›› 2017, Vol. 36 ›› Issue (03): 934-943.DOI: 10.16085/j.issn.1000-6613.2017.03.022

• 工业催化 • 上一篇    下一篇

Mn基低温SCR催化剂的抗H2O、抗SO2研究进展

李晨露1,2, 唐晓龙1,2, 易红宏1,2, 高凤雨1,2, 李婧颖1,2, 储超1,2, 张润草1,2   

  1. 1 北京科技大学能源与环境工程学院, 北京 100083;
    2 工业典型污染物资源化处理北京市重点实验室, 北京 100083
  • 收稿日期:2016-06-17 修回日期:2016-09-13 出版日期:2017-03-05 发布日期:2017-03-05
  • 通讯作者: 唐晓龙,教授,博士生导师,从事环境污染控制与治理、环境功能材料等研究。
  • 作者简介:李晨露(1992-),女,硕士研究生。E-mail:pt_lichenlu@126.com。
  • 基金资助:

    河北省科技支撑计划重点项目(15273716D)、国家自然科学基金(20907018,21177051)、新世纪优秀人才支持计划(NECT-13-0667)、首都蓝天行动培育专项课题(Z141100001014006)及中央高校基本科研业务费专项资金(FRF-TP-14-007C1)项目。

Review on manganese based catalysts resistant to H2O and SO2 for SCR reduction at low temperature

LI Chenlu1,2, TANG Xiaolong1,2, YI Honghong1,2, GAO Fengyu1,2, LI Jingying1,2, CHU Chao1,2, ZHANG Runcao1,2   

  1. 1 School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;
    2 Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China
  • Received:2016-06-17 Revised:2016-09-13 Online:2017-03-05 Published:2017-03-05

摘要:

Mn基催化剂因具备良好的催化性能而广泛应用于低温NH3-SCR脱硝研究领域,然而烟气中存在的H2O、SO2会导致催化剂较严重地失活,故研究低温Mn基催化剂的抗H2O、抗SO2性能十分必要。本文主要阐释了H2O、SO2的作用机理,详细归纳了抗H2O、抗SO2效果较好的Fe、Ce、Sm、Sn等金属掺杂型、Mn-Ce/TiO2等常规载体及Mn/Fe-Ti等复合载体构成的负载型、Fe2O3@MnOx@CNTs等核壳结构型和MnxCo3-xO4纳米笼等规则结构型组成的特殊结构型Mn基催化剂,简要总结了各类催化剂的现阶段研究进展和局限,并提出各类型催化剂的未来可能研究方向为优化金属掺杂催化剂的制备方法或添加新型有效助剂,保证高抗性前提下进一步降低载体型催化剂的工作区间以及批量化制备特殊结构型催化剂。

关键词: 选择催化还原, 脱硝, Mn基催化剂, 低温, 抗H2O、抗SO2

Abstract:

Manganese-based catalysts are widely used in NH3-SCR reduction owing to their excellent catalytic performance at low temperature. However,H2O and SO2 will cause server catalyst deactivation, thus it is necessary to develop the catalysts resistant to H2O and SO2. This study mainly summarizes the deactivation mechanism of H2O and SO2,and reviews some compound catalysts such as Mn-Fe,Mn-Ce, Mn-Sm,Mn-Sn,and supported catalysts with both conventional carrier like TiO2 and Al2O3 and metal modifying carrier like Fe-Ti and Ce-Zr. The catalysts with special construction for instance MnO2@NiCo2O4 core-shell structure and MnxCo3-xO4 regular nanocage-shape structure are also discussed. The superiority and inferiority of each kind catalyst are introduced and the possible research directions in future are proposed as to optimize the preparation method of the metal doped catalyst or add new effective additives to reduce the working temperature of the supported catalyst while ensure high resistance to H2O and SO2,and to explore the large-scale preparation method for special structured catalysts.

Key words: selective catalytic reduction(SCR), denitration, Mn-based catalyst, low-temperature, resistance to H2O and SO2

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