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1、CatalysisToday46(1998)233±316CatalyticremovalofNOa,*bbV.I.PaÃrvulescu,P.Grange,B.DelmonaDepartmentofChemicalTechnologyandCatalysis,FacultyofChemistry,UniversityofBucharest,B-dulRepublicii13,Bucharest70346,RomaniabUniversiteÂCatholiquedeLouvain,UniteÂdecata
2、lyseetchimiedesmateÂriauxdiviseÂs,PlaceCroixduSud2/171348,Louvain-la-Neuve,BelgiumAbstractTheaimofthispaperistoreviewthecatalyticreactionsfortheremovalofNOand,moreparticularly,todiscussthereductionofNOinthepresenceofNH3,CO,H2orhydrocarbonsaswellasthedecomp
3、ositionofNO.Thenatureofthedifferentactivespecies,theirformationduetodispersionandtheirinteractionwithdifferentsupportsaswellasthecorrespondingcorrelationswithcatalyticperformancearealsodiscussed.Anothergoalofthisreviewistoexplainthemechanismandkineticsofth
4、esereactionsondifferentsurfacesaswellasthecatalyststability.#1998ElsevierScienceB.V.Allrightsreserved.Keywords:RemovalofNO;DecompositionofNO;Mechanismandkinetics1.Introductionzeolitesandheteropolyacids,alloysandamorphousalloys,membraneandmonolithiccatalyst
5、s,etc.ThereductionofnitrogenoxideemissionshasDuetotheextraordinarydiversityofcatalysts,thisbecomeoneofthegreatestchallengesinenvironmenttopicisalwaysdiscussedatvariousconferencesonprotection.Thisiswhyitisbeingintenselystudiedbycatalysis.Eachyear,atleasttwo
6、conferencesarenumerousgroupsfromacademicaswellasindustrialentirelydevotedtoenvironmentalcatalysis,nottoresearchlaboratories.Theinterestinthesubjectismentionanadditionalperiodicconferenceonauto-re¯ectedinthenumberofpapers,includingalargemotivepollutioncontr
7、ol.numberofreviewsandpatents,publishedeachyear.TheuseofsuchalargenumberofcatalyststoThereishardlyanissueofajournalrelatedtocatalysiseliminateNOislogicallyassociatedwithdifferentthatdoesnotcontaincontributionsdealingwiththewaysofreaction.Itispossibletodivid
8、ethesewayseliminationofNO.intofourcategoriesormethods:Thenatureofthecatalystisanotherelementgivingweighttothetopic.Virtuallyallknowncategoriesof1.theselectivecatalyticreductionofNOwithcatalystshavebeentested:
