粉末活性炭孔隙结构和表面化学性质对吸附SO2的影响

201432SO2*13111231.2100312.2500613.2501005SO2。N2、、Boehm、、SO2。SO2。SO2SO2、SO2、。SO2。SO2EFFECTOFPOＲESTＲUCTUＲEANDSUＲFACECHEMISTＲYOFPOWDEＲACTIVATEDCAＲBONONSO2ADSOＲPTIONLiBing13XueJianming1XuYueyang1WangHongliang1MaChunyuan2ChenJianmin31.GuodianScienceandTechnologyＲesearchInstituteStatePowerEnvironmentalProtectionＲesearchInstituteNanjing210031China2.NationalEngineeringLaboratoryforCoal－firedPollutantsEmissionＲeductionShandongUniversityJinan250061China3.SchoolofEnvironmentalScienceandEngineeringShandongUniversityJinan250100ChinaAbstractFivekindsofpowderactivatedcarbonswereusedtoinvestigateSO2adsorptioninafixedbedreactor．ThephysicochemicalpropertieswerecharacterizedbyN2adsorptionisothermelementalanalysisBoehmtitrationther-mogravimetricanalysisandFT－IＲspectroscopy．Theeffectsofporestructureandsurfacechemistryofpowderactiva-tedcarbononSO2adsorptionwerediscussed．TheresultsshowthattheactivatedcarbonshavedifferentporestructureandsurfacechemicalpropertiesbecauseofthedifferentprecursorandactivationmethodandpresentdifferenttimecourseofSO2adsorption．SO2adsorptioniscorrelatedwiththepropertiesofactivatedcarbon．SO2adsorptioncapacityisindependentofspecificsurfaceareaandporevolumeandincreaseswithmicroporewidthdecreasingwhichisin-creasedwiththeincreaseintheamountsofsurfacebasicfunctionalgroups．Themicroporewidthandsurfacechemis-tryofpowderactivatedcarboninfluenceSO2adsorption．KeywordspowderactivatedcarbonSO2adsorptionkineticssurfaceproperties*8632013AA065401。0SO2SO2－、SO2SO3、NOx、、1－4。SO2。Ｒubio5BET6、Izquier-do78452014328SO2Delay9。Lisovskii10SO2Lizzio11SO2。SO2。5～9mm12－13142－3SO2。5SO2SO2。SO2。11.15CAC1、CAC2、CAC3YACWAC。548μm。1.2N2。QuadraSorbStation1－196℃N2BETDFT、Dubinin-Ｒadushkevich。VarioELC、H、NGB/T7702.15－1997O。Boehm11。MettlerToledoTGA/DSC1/1600HT。10mgN220mL/min30～1000℃10℃/min。BrukerVEＲTEX－70FI－TＲKBr1∶3004000～400cm－14cm－10．01cm－1。1.3SO2SO21。15mm500mm250mm。N2、O2、SO2、H2ON2、O2、SO2/N2SO25%SevenstarCS200。H2ON2H2ON2H2O。H2O。105℃24h0．5gSO2。SO20．1%H2O8%O26%N2200mL/min65℃。SO2FT－IＲGasmetDx4000。SO2SO2SO2mg。1—2—3—4—5—6—7—8—9—FT－IＲ10—194520143222.12IUPAC5N2Ⅰ。WAC、CAC1CAC3“”p/p0=1CAC2YAC。2N2/－196℃3DFT10nm。WAC、CAC1CAC32～4nmCAC2YAC2～3nm。1。1。WACYAC。SO2、O2、H2O0．4110．3460．264nmSO2、O2、H2O。3DFT1/m2·g－1/cm3·g－1/cm3·g－1/nmWAC1237.1120．4550．7231.188YAC456.2490．1930．2240．952CAC1667.7750．2720．4270．973CAC2724.8310．3060．3721.010CAC3761.3290．2760．4781.052Boehm25。2/%CdHdNdOdAd/%mmol·g－1WAC82.082.160．3910.534.840．6340．0390．0760．2360．322YAC81.921.120．372.8413.75—1.583———CAC183.781.30．527.816.59—1.021———CAC282.650．970．522.9612.90．0570．5230．012——CAC374.470．950．443.3920．750．1790．441—0．2090．001“d”“－”。055201432。N＜0．55%2。CO2CO。。Figueiredo15－16。400℃CO2600～650℃CO2CO2CO700℃CO900℃CO。4。a—TGb—DTG45FI－TＲ。3700～3000cm－1、、O－H171660～1500cm－1C=OC=C181480～1340cm－1O－H、191300～1000cm－1、、、C－O20。5FT－IＲBoehm、、FT－IＲWAC、、YAC、CAC1、CAC2、CAC3、。、、2122。WACYAC、CAC1。2.2SO26SO2。SO2SO2SO2。SO2SO2SO2。1552014326SO22.3SO2。。7aBETSO2BETSO2WACBETSO2YACBETSO2。BETSO2。7bSO2SO2。CAC1CAC3SO2WACSO2。7cSO2SO2SO2SO2。2.4SO2O2H2OSO2SO2。。WAC。2.1WAC、、a—BETb—c—DＲ7SO2。SO2SO2。8SO2SO2。SO2。。YAC、CAC1Davini24SO2。YAC、CAC1SO2。2552014328SO2SO2SO2SO2。SO2。31SO2SO2SO2SO2。2SO2SO2。3SO2、SO2SO2。1．J．200934101400－1404．2．SO2D．2012．3．D．2012．4IsaoMochidaYozoKoraiMasuakiShirahamaetal．ＲemovalofSOxandNOxoveractivatedcarbonfibersJ．Carbon2000382227－239．5ＲubioBIzquierdoMT．LowcostadsorbentsforlowtemperaturecleaningoffluegasesJ．Fuel1998776631－637．6．J．．2009393635－640．7IzquierdoMTＲubioB．Carbon-enrichedcoalflyashasaprecursorofactivatedcarbonsforSO2removalJ．JournalofHazardousMateri-als20081552199－205．8．J．2012323546－52．9DaleyMAMangunCLDeBarrJAetal．AdsorptionofSO2ontooxidationandheat-treatedactivatedcarbonfibersACFsJ．Car-bon1997353411－417．10LisovskiiASemiatＲAharoniC．Adsorptionofsulfurdioxidebyac-tivecarbontreatedbynitricacidⅠ．effectofthetreatmentonadsorp-tionofSO2andextractabiltyoftheacidformedJ．Carbon199735101639－1643．11LizzioADeBarrJA．EffectofsurfaceareaandchemisorbedoxygenontheSO2adsorptioncapacityofactivatedcharJ．Fuel199675131515－1522．12．J．1999276522－528．13．J．．200710365－68．14．SO2J．201237101737－1742．15FigueiredoLPereiraＲFreitasA．Modificationofthesurfacechemis-tryofactivatedcarbonsJ．Carbon19993791379－1389．16PuenteGPisJJMenendezJAetal．Thermalstabilityofoxygenat-edfunctionsinactivatedcarbonsJ．JournalofAnalyticalandAppliedPyrolysis1997432125－138．17ZhouJHSuiZJZhuJetal．Characterizationofsurfaceoxygencom-plexesoncarbonnanofibersbyTPDXPSandFT-IＲJ．Carbon2007454785－796．18DandekarABakerＲTKVanniceMA．Characterizationofactivated-carbongraphitizedcarbonfibersandsyntheticdiamondpowderusingTPDandDＲIFTSJ．Carbon199836121821－1831．19ＲosTGVanDillenAJGeusJWetal．Surfacestructureofun-treatedparallelandfishbonecarbonnanofibresaninfraredstudyJ．Chemphyschem200232209－214．20ToebesMLvanHeeswijkJMPBitterJHetal．Theinfluenceofox-idationonthetextureandthenumberofoxygen-containingsurfacegroupsofcarbonnanofibersJ．Carbon2004422307－315．21ContescuAContescuCPutyeraKetal．SurfaceacidityofcarbonscharacterizedbytheircontinuouspKdistributionandBoehmtitrationJ．Carbon199735183－94．22．D．2004．23PineroEＲAmoro