电力科技与环保2025，Vol.41Issue(3)：383-392,10.DOI:10.19944/j.eptep.1674-8069.2025.03.004
锰基低温选择性脱硝催化剂研究进展
Research progress of manganese-based low-temperature SCR denitrification catalysts
摘要
Abstract
[Objective]Vanadium-based catalysts face challenges such as poor low-temperature activity and susceptibility to poisoning in selective catalytic reduction(SCR)technology,while manganese-based catalysts have emerged as a research hotspot due to their excellent low-temperature performance.This paper systematically reviews the types,structures,and anti-poisoning strategies of manganese-based catalysts to promote their industrial application in denitrification.[Methods]By summarizing recent studies,manganese-based catalysts are categorized into multi-metal manganese oxides and supported catalysts(metal oxides,carbon-based materials,molecular sieves).Anti-poisoning strategies include:1)Metal doping(e.g.,Fe,Ce,Ni)to optimize redox properties;2)Carrier optimization(e.g.,TiO2,carbon composites)to enhance dispersion and stability;3)Morphological design(e.g.,nanorods,core-shell structures)to inhibit sulfate deposition.[Results]Metal doping significantly increases the Mn4+ratio,e.g.,Fe-Mn/TiO2 achieves 97.7％NO conversion at 150℃.Carrier optimization,such as TiO2-supported Mn catalysts,maintains stability under H2O for 10 days.Morphological modifications,like MnOx/CeO2 nanorods,show no activity loss after 1000 hours in 572 mg/m3 SO2.Bimetallic doping(e.g.,Fe:Co molar ratio 2:4)improves sulfur resistance by 30％.[Conclusion]Manganese-based catalysts exhibit enhanced low-temperature activity and anti-poisoning performance through multi-component doping,carrier synergy,and structural design.However,challenges such as long-term stability,impacts of multi-pollutants(e.g.,heavy metals,VOCs),and cost require further investigation.Future research should focus on eco-friendly modifications and in-situ mechanistic studies to facilitate industrial adoption.关键词
NH3-SCR/锰基催化剂/金属掺杂/载体优化/抗硫抗水性Key words
NH3-SCR/manganese-based catalyst/metal doping/carrier optimization/sulfur and water resistance分类
能源与动力引用本文复制引用
李昉啸,刘金浩,王瑞婷,马靖文..锰基低温选择性脱硝催化剂研究进展[J].电力科技与环保,2025,41(3):383-392,10.基金项目
国家自然科学基金项目(22408391) （22408391）
中央高校基本科研业务费专项资金资助项目(2024ZKPYHH04) （2024ZKPYHH04）
