PEGPEI复合膜渗透汽化汽油脱硫研究制膜条件影响

PEG/PEI(),3,,,(,100084):PEI,PEG,PEG/PEIFCC.PEG/PEI,..,.PEG,,.:;;PEG/PEI;/:TQ028.8:A:1007-8924(2009)03-0039-05,.30g/g[1],200550g/g.200571800g/g500g/g[2],.,2008150g/g.,,85%95%[3].34%,80%,[4].FCC4,60%,85%.,[5,6].,[7,8].,,.11.1(PEIUltemÓ-1000),GE,1.N-(NMP),PEI,,;(PEG,ALDRICH),10,PEG,;,PEG,,;,PEG,,1(PEI)Fig.1ThechemicalstructureofPEI:2008-02-29;:2008-06-10:973(2003CB615701);(20676067,20736003);863(2007AA06Z317);(20070003130);(X505002):(1980-),,,,[e-mail]294Vol.29No.420098MEMBRANESCIENCEANDTECHNOLOGYAug.2009;,,.1.22.,,,,.,,,1h,,3,,.::J=mtA(1):=xPxF(2),xP;xF2Fig.2Schemeofthepervaporationapparatus;m,kg;t,h;A,m2.,,200ng/L.1.3NicoletIR560FTIR-ATR,ZnSe.PEG/PEIJSM-7401F.1.43cm,60,48h,,m1.,96h,,,m2.:=m2-m1m1100%(3)22.1PEG/PEI2.1.1(FTIR-ATR)PEG/PEI,3.3PEG/PEIFTIRFig.3FTIRspectraofmembranesamples3,COC1099(11501050cm-1),15001250cm-113001050cm-1COHOH.2.1.2PEIPEG/PEIHITACHIJSM-7401FPEIPEG/PEI.,.,4029,.,,.4PEG/PEI.,PEG/PEI,,.4,6m.5,PEI,PEG/PEI,1,.4PEG/PEISEMFig.4Cross-sectionmorphologyofPEG/PEIcompositemembrane5PEIPEG/PEISEMFig.5SurfacemorphologiesofPEIUFmembraneandPEG/PEIcompositemembrane2.2PEG/PEI2.2.1,,,6.6,120min,,,,,240min,,.,,,,,.,5.5%,:w(PEG)=14%,80,w()=16%,12h6PEG/PEIFig.6SwellingbehaviorofthePEG/PEIcompositemembrane,.2.2.2PEG,PEGPEG/PEI,7.:80,w()=16%,12h7PEGPEG/PEIFig.7EffectofPEGcontentonpervaporationmembraneperformanceforseparationofthiophene/heptanemixture7,PEG,,,,.,PEG,PEG,.,,,,;,,PEG,,,.PEG,4:PEG/PEI()41,,,.,PEG14%16%.2.2.3PEG,PEG/PEI,8.:w(PEG)=14%,80,12h8PEG/PEIFig.8Effectofamountofcrosslinkingagentonpervaporationmembraneperformanceforseparationofthiophene/heptanemixture8,,,16%18%,,,,.,PEG,,,;,,,,,,,,,,.,,,.,16%18%.2.2.4PEG,PEG/PEI,9.:w(PEG)=14%,w()=16%,12h9PEG/PEIFig.9Effectofcrosslinkingtemperatureonpervaporationmembraneperformanceforseparationofthiophene/heptanemixture9,,,.:,,,,;,,PEG,,,.,,80.2.2.5PEG,PEG/PEI,10.10,,,,12h,,1.08kg/(m2h),10.5.:,,,,,,,,.,PEG,,,12h.4229:w(PEG)=14%,80,w()=16%10PEG/PEIFig.10Effectofcrosslinkingtimeonpervaporationmembraneperformanceforseparationofthiophene/heptanemixtur3PEG/PEI,.,.1)PEG,,,,.PEG14%16%.2),,,.16%18%.3),,.6080.4),,.12h.,,1.08kg/(m2h),10.5PEG/PEI,,.[1],,.[J].,2001,9(3):28-32.[2].[J].,1999,29(8):3-8.[3]ChengWC,KimG,PetersAWX,etal.Environmen2talfluidcatalyticcrackingtechnology[J].CatalRevSci&Eng,1998,40(1-2):39-79.[4],,,.[J].,2000,31(8):1-7.[5],,,.FCC[J].(),2001,25(6):78-80.[6],,,.[J].,2006,27(1):14-17.[7],,.[J].,2003(23)4:103-109.[8],,.[J].,2002,26(5):259-263.[9],,,.PDMS[J].,2006,26(5):72-75.Pervaporationperformanceofpolyethyleneglycolmembranesforseparationofthiophene/heptanemixtures(I)EffectofPEG/PEIcompositemembranepreparationconditionCHENJian,LIJiding3,QIRongbin,YEHong,CHENCuixian(MembraneTechnology&EngineeringResearchCenter,DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:CrosslinkedPEG/PEIcompositemembraneswerepreparedbyusingPEIultrafiltrationmembraneasthesubstrateandPEGdensemembraneasthecompositelayer.ThecompositionsofthePEG/PEIcompositemembraneswerecharacterizedbyFTIRspectra.Themorphologiesofthesurfaceandcross-sectionstructuresofthePEG/PEIcompositemembraneswerecharacterizedbyscanningelectronmicroscope(SEM).ThePEG/PEIcompositemembraneswereusedinthepervaporationseparationofn-heptane/thiophenemixtures.Theswellingdegreeofthecompositemembrane,theeffectsofamountofPEG,crosslinkingtemperature,amountofcrosslinkingagentandcrosslinkingtime,ontheseparationefficiencyofn-heptane/thiophenemixtureswerein2vestigated,andtheoptimalpreparationconditionsofPEG/PEImembranesweredetermined.Keywords:pervaporation;desulfurization;PEG/PEIcompositemembrane;thiophene/heptanemixtures4:PEG/PEI()43