钞改性锰基催化剂的低温脱硝性能和反应机理研究进展

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关键词：低温脱硝； Sm-Mn 催化剂；抗水抗硫性； NH3 -SCR反应机理 中图分类号：TQ133.3 文献标志码：A DOI：10.3969/j.issn.1003-9015.2025.02.003

Low-temperature denitration and reaction mechanism of samarium modified Mn-basedcatalysts：AReview

ZHU Haofeng 1 ，MENG Sitong'，DUAN Yumei¹， ZHANG Jing¹，HE Yungang¹，DUAN Kaijiao 1，2 XIANG Mingwu1，JIA Lijuan1 （1. College of Chemistry and Environment， Yunnan Minzu University，Kunming 6505O4， China; 2.Key Laboratory of Unconventional metallurgy，Ministry of Education，Kunming 65oo93，China）

Abstract： Samarium modified Mn-catalysts have unique advantages of de-NOin non-power industries because of the superior low-temperature activity and SO resistance. However，catalytic activity drops sharply in the presence of H2O and SO 2 . Element doping，novel preparation methods and supporter selection are key methods to enhance H2O and SO 2 resistance at low temperatures. Hence，the de-NOx advantages and effcts of Samarium modified Mn catalysts at low temperature are introduced in this review. The reaction path and mechanism of H2O and SO 2 resistance on Sm-Mncatalysts are discussed.Focused on catalyst design and development，the efects and characteristics of the three key methods on Sm-Mn de-NOxperformances at low temperature are presented.Finally，future research are proposed.

Key words： de- ∇⋅NOx at low-temperature；Sm-Mn catalyst； H2O and SO2 resistance；reaction mechanism of NH3 -SCR

1前言

氮氧化物（ NOx ）不仅造成雾霾、酸雨和光化学烟雾等环境污染问题，而且损害人体健康[1]。（剩余19140字）