Research progress in high-temperature SCR denitration: from catalyst innovations to reaction mechanism exploration

WANG Yu; TANG Tianfa; ZHOU Qinyu; XU Lu; TANG Changjin

doi:10.19944/j.eptep.1674-8069.2025.03.001

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Research progress in high-temperature SCR denitration: from catalyst innovations to reaction mechanism exploration

Invited Review | 更新时间：2026-10-14

- Research progress in high-temperature SCR denitration: from catalyst innovations to reaction mechanism exploration
- Electric Power Technology and Environmental Protection Vol. 41, Issue 3, Pages: 343-356(2025)
- 作者机构：
  
  南京师范大学环境学院，江苏南京 210023
- 作者简介：
- 基金信息：
- DOI：10.19944/j.eptep.1674-8069.2025.03.001
  CLC： TK437;TQ152
- Received：16 March 2025，
  
  Accepted：16 May 2025，
  
  Published：15 June 2025
- 稿件说明：
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王瑜,唐添发,周沁宇，等.高温SCR脱硝研究进展：从催化剂到反应机理[J].电力科技与环保,2025,41(3):343-356.

WANG Yu, TANG Tianfa, ZHOU Qinyu, et al. Research progress in high-temperature SCR denitration: from catalyst innovations to reaction mechanism exploration[J]. Electric Power Technology and Environmental Protection, 2025, 41(3):343-356.
王瑜,唐添发,周沁宇，等.高温SCR脱硝研究进展：从催化剂到反应机理[J].电力科技与环保,2025,41(3):343-356. DOI： 10.19944/j.eptep.1674-8069.2025.03.001.

WANG Yu, TANG Tianfa, ZHOU Qinyu, et al. Research progress in high-temperature SCR denitration: from catalyst innovations to reaction mechanism exploration[J]. Electric Power Technology and Environmental Protection, 2025, 41(3):343-356. DOI： 10.19944/j.eptep.1674-8069.2025.03.001.

摘要

目的

为应对燃气轮机、煤层气发电等行业烟气减排需求，急需开发高温（≥500 ℃）脱硝催化剂，以解决商用钒钛催化剂因高温烧结、氨氧化副反应加剧而带来的活性下降问题。

方法

系统综述了分子筛基和金属氧化物基两类高温催化剂，总结了催化剂制备方法与性能优化策略。结合文献报道，讨论了高温脱硝催化剂的NH₃-SCR反应机理以及抗中毒作用机制，包括抗（水）热稳定性和抗硫/碱金属中毒。

结果

在分子筛基催化剂中，Fe/SSZ-13和Cu-SSZ-13表现出优异高温活性，主要归因于孤立金属位点与酸性位点的协同作用。对于氧化物基催化剂，WO₃-FeO

ₓ

和硫酸化CeO₂通过增强表面酸性、氧空位及抑制NH₃氧化实现高效脱硝。抗中毒研究表明，ZrO₂掺杂可提升抗硫性能，而Ce掺杂能缓解碱金属中毒。

结论

分子筛基与氧化物基催化剂在高温脱硝领域展现出潜力，但需进一步优化抗失活机制。未来研究应聚焦高温微观失活机制解析、硫盐动态行为与碱金属捕获策略、多污染物协同控制及整体式催化剂的实际应用适配，推动高温脱硝技术的工业化应用。

Abstract

Objective

To meet the strict pollution control requirement for treating flue gas in scenarios like gas turbines and coalbed methane power generation

the development of efficient SCR catalysts that can perform well under high temperatures (> 500 ℃) becomes very urgent

mainly due to the evident activity loss caused by serious sintering and aggravated NH3 over-oxidation for the commercial catalysts of V2O5-TiO2.

Methods

A systematic review was conducted on two categories of high-temperature catalysts: zeolite-based and metal oxide-based. Preparation methods

performance optimization strategies

and reaction mechanisms were analyzed. In-situ FTIR and poisoning resistance experiments were employed to investigate NH

-SCR pathways

hydrothermal stability

and resistance to sulfur/alkali metal poisoning under high temperatures.

Results

For zeolite-based catalysts

Fe/SSZ-13 and Cu-SSZ-13 exhibited outstanding performance due to isolated metal sites and synergistic acid-redox properties. Among oxide-based catalysts

-FeO

ₓ

and sulfated CeO

achieved high efficiency by enhancing surface acidity

oxygen vacancies

and suppressing NH

oxidation. Poisoning resistance studies revealed that ZrO

doping improved sulfur tolerance

while Ce doping mitigated alkali metal poisoning.

Conclusion

Zeolite- and oxide-based catalysts demonstrate potential for high-temperature denitration

yet require further optimization in anti-deactivation mechanisms. Future research should focus on elucidating microstructural degradation under high temperatures;dynamic sulfur salt behavior and alkali metal trapping strategies; multi-pollutant synergistic control and practical adaptation of monolithic catalysts.

关键词

Keywords

references

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State Key Laboratory of Low-carbon Smart Coal-fired Power Generation and Ultra-clean Emission(Energy Science and Technology Research Institute Co.,Ltd)

School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology

Shanghai Urban Construction Design & Research Institute (Group) Co., Ltd.

Huadian Electric Power Research Institute Co., Ltd.

School of Energy and Power Engineering, University of Shanghai for Science and Technology

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