摘要
将NO选择性催化氧化为NO_(2)(NO-SCO)是氨-选择性催化还原(SCR)技术(NH_(3)-SCR)中实现快速SCR反应的关键步骤,同时也是多污染物协同脱除技术(预氧化+碱液吸收)中的重要一环。因此,开发具备优异催化性能的NO-SCO催化剂具有重要的应用价值。钙钛矿型(A_(x)B_(y)O_(3))催化剂因其低成本和良好的NO催化氧化性能而展现出巨大的商业应用潜力。系统梳理了近年来基础型钙钛矿、调控型钙钛矿以及改性/负载型钙钛矿在催化氧化NO领域的研究脉络和发展趋势,重点分析总结了A、B位调控对催化剂物理化学特性和催化性能的影响规律。分析了NO-SCO技术在实际脱硝应用场景中面临的主要问题,提出了设计与开发具备优越催化活性以及抗硫抗水性能的钙钛矿型NO-SCO催化剂是该领域的进一步研究方向。
The selective catalytic oxidation of NO to NO_(2)(NO-SCO)is a critical step in achieving a“fast selective catalytic reaction(SCR)”in ammonia-selective catalytic reduction technology(NH_(3)-SCR)and represents significant progress in the simultaneous removal of multiple pollutants through pre-oxidation and alkaline adsorption.Therefore,the development of NO-SCO catalysts with excellent catalytic performance has important practical value.Perovskite-type(A_(x)B_(y)O_(3))catalysts are cost-effective and exhibit excellent catalytic performance for NO oxidation,making them highly promising for commercial applications.A comprehensive review of recent research in the field of NO catalytic oxidation using perovskite-type catalysts(basic perovskite,substituted perovskite,modified or supported perovskite)was provided in this paper.The influences of A-site and B-site substitutions on the physical-chemical properties and catalytic performance of these catalysts were analyzed and summarized.An analytical examination of the principal challenges encountered by NO-SCO technology within actual denitrification application contexts was conducted.It was proposed that the design and development of perovskite NO-SCO catalysts with superior catalytic activity and resistance to sulfur and moisture represented a critical avenue for further research direction in this field.
作者
毛星舟
赖飞
高嘉奕
袁博
郝润龙
付东
赵毅
MAO Xingzhou;LAI Fei;GAO Jiayi;YUAN Bo;HAO Runlong;FU Dong;ZHAO Yi(College of Environmental Science and Engineering,North China Electric Power University,Beijing 102206;Department of Environmental Science and Engineering,North China Electric Power University(Baoding),Baoding Hebei 071003)
出处
《环境污染与防治》
北大核心
2025年第4期129-136,I0007,I0008,共10页
Environmental Pollution & Control
基金
河北省自然科学基金面上项目(No.E2024502082)。
关键词
钙钛矿
选择性催化氧化
NO
脱硝
perovskite
selective catalytic oxidation
NO
denitrification
