用于NH3选择性催化还原NO的非钒基催化剂与研究进展.pdf

:0253-9837(201107-1113-16DoI:103724/:1l13~l128用于NH3选择性催化还原NO的非钒基催化剂研究进展刘福东,单文坡,石晓燕,张长斌,贺泓中国科学院生态环境研究中心,北京100085摘要:NH3选择性催化还原NO()技术在燃煤电厂烟气脱硝过程中有着多年的工业应用经验,(MoO3)/TiO2催化剂体系应用于柴油车尾气净化仍存在着诸多问题,开发新型、高效、(包括Cu基分子筛催化剂以及Fe基分子筛催化剂)和氧化物催化剂(包括Fe基氧化物催化剂、Mn基氧化物催化剂以及其他非钒基氧化物催化剂1为主线,,较为全面地总结了该系列催化剂的NH3一SCR反应性能、活性中心结构、低温SCR活性改进、、抗H2O或抗SO2性能改善以及工业化应用的可行性,:选择性催化还原;烟气脱硝;柴油车尾气净化;非钒基催化剂;分子筛催化剂;氧化物催化剂;低温活性;反应机理中图分类号:o643文献标识码:A收稿日期:2011—03—:2011—04—:(010)62849123;电子信箱:******@:国家高技术研究发展计划(863计划,2009AA064802,2009AA06Z301);国家自然科学基金(50921064);日本高能加速器研究机构(PhotonFactory,IMSS,KEK,Japan,2009G177).ResearchProgressinVanadium—FreeCatalystsfortheSelectiveCatalyticReductionofNowithNH3LIUFudong,SHANWenpo,SHIXiaoyan,ZHANGChangbin,HEHongResearchCenterforEco—EnvironmentalSciences,ChineseAcademyofSciences,Beij'ing100085,ChinaAbstract:SelectivecatalyticreductionofNOwithNH3(NH3一SCR)isawell—proventechniquefortheremovalofNOfromstationarysourcessuchascoal—firedpowerplants,andisalsooneofthemostpromisingtechniquesfortheNOeliminationfromdieselexhaustunderoxygen--WO3(MoO3)/TiO2catalystforindustrialuse,manyre—searchersfocusonthedevelopmentofnovel,highlyefficient,stable,environmental—friendlyandvanadium-—freeNH3一SCRcatalystsisreviewed,includingzeolitecatalysts(suchasFe—zeolitecatalystsandCu-zeolitecatalysts)andoxidecatalysts(suchasFe-basedoxidecatalysts,Mn-basedoxidecatalysts,andothervanadium—freeoxidecata-lysts).Severalaspectsinthisfield,includingtheevaluationofcatalyticperformance,thestructureanalysisofactivesites,theimprovementoflowtemperatureactivity,thestudyofNH3一SCRreactionmechanism,theenhancementofH20/SO2durability,andthefeasibility