化工进展 ›› 2023, Vol. 42 ›› Issue (1): 226-235.DOI: 10.16085/j.issn.1000-6613.2022-0510

• 工业催化 • 上一篇    下一篇

锰基催化剂结构形貌对催化剂抗硫抗水性能影响

李钊铭1(), 沈伯雄1,2(), 封硕1, 边瑶1   

  1. 1.河北工业大学能源与环境工程学院,天津 300401
    2.河北工业大学化工学院,天津 300401
  • 收稿日期:2022-03-29 修回日期:2022-07-07 出版日期:2023-01-25 发布日期:2023-02-20
  • 通讯作者: 沈伯雄
  • 作者简介:李钊铭(1997—),女,硕士研究生,研究方向为大气污染控制。E-mail:450600197@qq.com
  • 基金资助:
    国家自然科学基金区域联合重点(U20A20302);河北省创新群体(E2021202006);天津科技专项(19ZXSZSN00050);河北省科技专项(20373701D);河北省重大成果转化(21283701Z)

Effect of structure and morphology on manganese-based catalysts’ sulfur and water resistance

LI Zhaoming1(), SHEN Boxiong1,2(), FENG Shuo1, BIAN Yao1   

  1. 1.School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
    2.School of Chemical Engineering, Hebei University of Technology, Tianjin 300401, China
  • Received:2022-03-29 Revised:2022-07-07 Online:2023-01-25 Published:2023-02-20
  • Contact: SHEN Boxiong

摘要:

锰(Mn)基催化剂在氨选择性催化还原(NH3-SCR)领域虽具有良好的低温活性,但容易受到二氧化硫和水蒸气的影响。研究发现调整催化剂的结构形貌可以有效提升催化剂的抗硫抗水性能。因此,本文综述了核壳结构、中空结构、三维有序孔道结构和二维层状结构Mn基催化剂在低温NH3-SCR抗硫抗水领域的研究进展,简要阐述了Mn基催化剂硫水中毒机理,并结合中毒机理与结构特点分析了结构在提升Mn基催化剂抗性方面起到的作用。此外,本文还总结了以上四种结构催化剂的制备方法,并指出结构催化剂未来工业化制备的发展方向。同时,对今后研究工作进行展望,提出深入研究协同中毒机理、模拟优化催化剂配方等建议,为实现Mn基催化剂的高抗性及工业化应用提供了借鉴。

关键词: 选择催化还原, 失活, 制备, 结构, Mn催化剂, 抗硫抗水

Abstract:

For ammonia selective catalytic reduction (NH3-SCR), the Mn-based catalysts have good low-temperature catalytic activity, but they are susceptible to SO2 and H2O. Adjusting the structural and morphology of the catalysts can effectively improve their sulfur and water resistance. Therefore, this review summarizes the research progress of Mn-based catalysts with different structures of core-shell, hollow, three-dimensional ordered porous and two-dimensional layered structure, for the sulfur and water resistance. The mechanisms of sulfur and water poisoning of Mn-based catalysts are briefly described. The effect of structure on the resistance enhancement of Mn-based catalysts is also analyzed based on the combination of poisoning mechanism and structural characteristics. This review also summarizes the preparation methods of the above four structural catalysts, and points out the development direction of industrial preparation of structural catalysts in the future. At the same time, the future research work is prospected. Suggestions such as in-depth study of synergistic poisoning mechanism, optimization of catalysts formulation via simulation are put forward, which could provide reference for improving Mn-based catalysts’ resistance and industrial preparation.

Key words: SCR, deactivation, preparation, structure, Mn-based catalyst, resistance to SO2 and H2O

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