A review of ammonia selective denitrification catalysts at ultra-low temperature

doi:10.16085/j.issn.1000-6613.2024-0588

Abstract

Abstract:

This review examines the current development in selective catalytic reduction (SCR) for denitrification (de-NO _x ), and introduces the unique advantages of ultra-low temperature SCR in terms of energy savings, cost reduction, mitigation of dust and anti SO₂ poisoning. It further summarizes the types of ultra-low temperature SCR catalysts, their structural characteristics, and the main challenges in applications, such as low de-NO _x activity, poor H₂O tolerance, and insufficient stability. Additionally, this review outlines the research progress in H₂O and SO₂ poisoning resistance of ultra-low temperature SCR catalysts. Finally, it proposes future development directions for ultra-low temperature SCR catalysts, emphasizing the need for in-depth research to enhance catalyst activity, improve H₂O and SO₂ tolerance, increase catalyst production, and understand the reaction mechanisms. In conclusion, ultra-low temperature ammonia SCR catalysts offer significant environmental and economic benefits, with broad application prospects in the field of air pollution control.

Key words: ultra-low temperature, environment, catalysis, denitrification, oxidation

摘要：

综述了选择性催化脱硝的发展现状，详细介绍了超低温选择性催化脱硝在节约能耗、降低成本、削弱烟尘和二氧化硫毒害方面的独特优势，并进一步总结了超低温脱硝催化剂的类型、催化剂结构特点及其在超低温脱硝应用中面临的主要问题，包括超低温脱硝活性低、抗水性差和稳定性不足等。此外，还概述了超低温脱硝催化剂在抗水中毒和抗硫中毒方面的研究进展。最后，提出了超低温脱硝催化剂的未来发展方向，强调需要在提高催化剂活性、改善抗水性和抗硫性、增加催化剂产量以及反应机理等方面进行深入研究。总之，超低温氨气选择性脱硝催化剂具有显著的环境和经济效益，在大气污染控制领域具有广阔的应用前景。

关键词: 超低温, 环境, 催化剂, 脱硝, 氧化

CLC Number:

O643.36

SONG Kunli, XIAO Lei, MA Dandan, XIAO Peng, YANG Shasha, SHI Jianwen. A review of ammonia selective denitrification catalysts at ultra-low temperature[J]. Chemical Industry and Engineering Progress, 2025, 44(4): 2028-2035.

宋坤莉, 肖雷, 马丹丹, 肖朋, 杨莎莎, 石建稳. 超低温氨气选择性脱硝催化剂的研究进展[J]. 化工进展, 2025, 44(4): 2028-2035.

Figures/Tables 5

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