烧结烟气CO氧化催化剂研究进展

王智峰; 李晓曼; 沈凯; 张亚平

doi:10.13205/j.hjgc.202609009

烧结烟气CO氧化催化剂研究进展

doi: 10.13205/j.hjgc.202609009

东南大学能源与环境学院能源热转换及其过程测控教育部重点实验室, 南京 210096

基金项目:

国家重点研发计划“变负荷燃煤机组的宽温脱硝技术”（2023YFB4102903-03）

详细信息

作者简介:
王智峰(2002—),男,硕士研究生。3080696220@qq.com

通讯作者:
张亚平(1979—),女,教授,博士生导师。amflora@seu.edu.cn

计量
- 文章访问数: 14
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- 被引次数: 0
出版历程
- 收稿日期: 2025-05-12
- 网络出版日期: 2026-11-05

Research advances in oxidation catalysts for CO in sintered flue gas

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

摘要

摘要: 烧结烟气是钢铁工业中CO排放的主要来源，鉴于其高毒性及对大气质量的影响，我国制定了严格的排放标准。催化氧化法因高效、低能耗成为控制CO排放的主流技术，但催化剂在复杂烟气组分（如SO₂、H₂O）下的中毒问题制约了其应用。系统综述贵金属（Pt、Pd、Au）与非贵金属（Cu、Mn、Fe）催化剂的研究进展，对比了其CO氧化活性及抗中毒性能。贵金属催化剂虽活性优异，但成本高昂；非贵金属催化剂可通过载体改性（如CeO₂、TiO₂）和掺杂（如Mn、V）显著提升性能，使得最终性能接近贵金属水平。中毒机制分析表明，SO₂通过形成硫化物覆盖活性位点或竞争吸附抑制反应，而H₂O则通过竞争吸附或改变氧物种分布影响催化效率。抗中毒策略包括优化载体（如CeO₂优先结合SO₂）、构建双金属协同体系（如Cu-V复合氧化物）及表面包覆技术（如SiO₂壳层隔离活性位）。未来需进一步解决低温活性、高湿度适应性及稳定性等挑战，推动非贵金属催化剂的工业化应用。
- 烧结烟气 /
- CO氧化 /
- 催化剂中毒 /
- 抗硫性能
Abstract: Sintering flue gas is the main source of CO emissions in the iron and steel industry， and its high toxicity and impact on atmospheric quality have prompted China to set strict emission standards. Catalytic oxidation has become a mainstream technology due to its high efficiency and low energy consumption， but the poisoning problem of catalysts under complex flue gas components （e.g.， SO₂， H₂O） restricts its application. In this paper， the research progress of noble metal （Pt， Pd， Au） and non-precious metal （Cu， Mn， Fe） catalysts is systematically reviewed， and their CO oxidizing activity and anti-poisoning performance are compared. Although the noble metal catalysts have excellent activity， they are usually costly； the non-precious metal catalysts can be significantly improved by carrier modification （e.g.， CeO₂， TiO₂） and doping （e.g.， Mn， V）， which can bring the performance close to the level of the noble metals. Poisoning mechanism analysis showed that SO₂ inhibits the reaction by forming sulfides to cover the active site or competing adsorption， while H₂O affects the catalytic efficiency by competing adsorption or altering the distribution of oxygen species. Anti-toxicity strategies include optimization of carriers （e.g.， CeO₂ preferentially binds SO₂）， construction of bimetallic synergistic systems （e.g.， Cu-V composite oxides）， and surface capping techniques （e.g.， isolation of the active site by SiO₂ shell layers）. Challenges such as low-temperature activity， high humidity adaptability， and stability need to be further addressed in the future to promote the industrial application of non-precious metal catalysts.
- sintering flue gas /
- CO oxidation /
- catalyst poisoning /
- sulfur resistance

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