纳米片聚结Co3O4微球催化甲苯燃烧-论文.pdf

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1、ChineseIournalofCatalysis35(2014)1475—1481催化学报2014年g35卷g9期lywwv~．chxb．cnaV{abIeat：wwwsc§n囊dl囊cm叠参量量曩委置叠誊誊誊量叠蔓。曩曩曩蠢：elCt_journal；horn舞pa彗孽wwweIVlIeom／lo／霉h日jArticleNanoplate-aggregateCo304microspheresfortoluenecombustionFangWang,HongxingDai，JiguangDeng，ShaohuaXie，HuanggenYang，W

2、enHanKeyLaboratoryofBeifingonRegionalAirPollutionControlandLaboratoryofCatalysisChemistryandNanoscience,DepartmentofChemistryandChemicalEngineering,CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beifing100124,ChinaARTICLEINF0ABSTRACTArticleh&tory：Nano

3、plate-aggregatemicrosphericalCo304waspreparedbyanethylenediamine-assistedhydro-Received28Ianuary2014thermalrouteandcharacterizedbymeansofnumeroustechniques．TheircatalyticactivitiesforAccepted3March2014toluenecombustionwereevaluated．TheCo304sampleobtainedusing1．0mlofethylenedia

4、minePublished20September2014andahydrothermaltreatmentat140。Cfor12hhadananoplate-aggregatemicrosphericalmot-phology．ThismicrosphericalCo304samplewithasurfaceareaof66mg一hadahigheradsorbedoxygenconcentrationandbetterlow-temperaturereducibilitythanbulkCo304．OvertheCo304Ke~vords：mi

5、crospheresample．thetemperaturesrequiredfor50％and90％tolueneconversionswere230Cobaltoxidemicrosphereand254。C，respectively,ataspacevelocityof20000mlg一h～．ThegoodcatalyticperformanceofNanoplatemorphologytheCo304microspheresamplewasrelatedtoitslargesurfacearea，highoxygenadspeciescon

6、cen—Surfactant—assistedhydrothermaltration．andgoodlow．temperaturereducibility．synthesis◎2014，DalianInstituteofChemicalPhysics，ChineseAcademyofSciences．ToluenecombustionPublishedbyElsevierB．V．Al1rightsreserved．1．IntroductionoxidationofVOCs．Forinstance，Co304nanoparticlesshowedgo

7、odactivityincatalyzingVOCoxidation[15]．Xueetal_[16]Mostvolatileorganiccompounds(vocs)emittedfromin-observedasignificanteffectofCo304morphologyoncatalyticdustrialandtransportationactivitiesareharmfultotheenvi—activityofAu／Co304forethyleneoxidation．ronmentandhumanhealth．Catalyti

8、coxidationisoneofthePreviously,ourgrouphasusedsilica(SBA一16or