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1、availableatwww.sciencedirect.comjournalhomepage:www.elsevier.com/locate/chnjcChineseJournalofCatalysis35(2014)1927–1936催化学报2014年第35卷第12期
2、www.chxb.cnArticleFormaldehydecatalyticoxidationoverhydroxyapatitemodifiedwithvariousorganicmoleculesYahuiSuna,ZhenpingQua,*,DanChena,Hui
3、Wanga,FanZhangb,QiangFubaKeyLaboratoryofIndustrialEcologyandEnvironmentalEngineering(MOE),SchoolofEnvironmentalScienceandTechnology,DalianUniversityofTechnology,Dalian116024,Liaoning,ChinabStateKeyLaboratoryofCatalysis,DalianInstituteofChemicalPhysics,ChineseAcademyofScienc
4、es,Dalian116023,Liaoning,ChinaARTICLEINFOABSTRACTArticlehistory:Received13April2014Accepted28April2014Published20December2014Keywords:ModifiedhydroxyapatiteSodiumcitrateSpecificsurfaceareaHydroxylgroupFormaldehydecatalyticoxidationHydroxyapatite(HAP)wasmodifiedbyaddingvari
5、ousorganicmolecules,suchascetyltrime‐thylammoniumbromide,sodiumdodecylsulfate,andsodiumcitrate,duringtheprecipitationofHAP.Sodiumcitrate‐modifiedHAPdisplayedthebestactivityforformaldehydeoxidation,achievingcompleteconversionat240°C.Theinfluenceoftheorganicmodifiersonthestru
6、ctureofHAPwasassessedbyX‐raydiffraction,Fouriertransforminfraredspectroscopy,N2adsorption‐desorption,scanningelectronmicroscopy,andthermogravimetry/derivativethermogravimetry.Thehigherspecificsurfaceareaandporevolume,andsmallerpores,owingtomodificationwithsodiumcitrate,favo
7、redadsorption,masstransfer,andinteractionprocessduringformaldehydeoxidation.Fur‐thermore,thehigherhydroxylgroupcontentobservedinsodiumcitrate‐modifiedHAPenhancedinteractionsbetweenformaldehydeandHAP,thusresultinginhighercatalyticactivity.©2014,DalianInstituteofChemicalPhysi
8、cs,ChineseAcademyofSciences.PublishedbyElsevierB.V.Allrightsreserved.1.IntroductionAsoneofthemostcommonvolatileorganiccompounds,formaldehyde(HCHO)isgeneratingincreasingattentionasitposespotentialhealthriskstohumansevenatlowconcentra‐tions.Thus,theremovalofHCHOhasbecomeanimp
9、ortantissue[1,2].NumerousstudieshavebeencarriedoutfortheabatementofHCHO;themaintec
