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2412Vol.24,No.12200812POLYMERMATERIALSSCIENCEANDENGINEERINGDec.2008PVP1,2,2(1.,100029;2.,102617):(PVP)PVP2Pd,SEM,TEM,UVTGPVP2Pd,PVP2Pd2100%,:;;;:TB383:A:100027555(2008)1220191204:2007210219;:2007211230:,,E2mail:liutaiqi@bipt.edu.cn,[1],,,,,,,[2],[35],,,PVP,,PVP,11.1N,N2(DMF):;:Mn=3104g/mol,;,SETARAM,TGlabsys;JSM26301F,;JEM2100XII,;UV22401,;26890N(NetworkGCSystem),5973(NetworkMassselectiveDetec2tor),1.2PVP0.1gPdCl25mol/L2mL100mL,PdCl2,1gPVP,48h,20%25%()1.3PVP/Pd()20%25%PVP2PdCl2,,:20kV25kV,8cm,140,50min,1.425,100,01194g,24mL50mL,40mL/min;30min,111mL,150min(85,300,200)22.1PVP/PdPVPPdCl2Scheme1,,[6,7]Scheme1PVP2PdCl215%35%,,,,23%28%,,,28%,,,,40%,,Fig.1,SEM,150nm400nm,TEM,Pd,10nm15nmPVP/Pd,14050min,,Fig.1ImagesoftitlecatalystA:SEMimageofcatalyst(5ktimes),fiberdiameterisabout150nm400nm;B:TEMimageofcatalyst(100ktimes),palladiumdi2ameterisabout10nm15nmPVPUV,PVP260nm,n3,,[8]TG,PVP,38039064.8%,PVP;PVP2Pd,31.57%200250380390,HCl;901104%,,2912008Fig.2TGdataofPVPandtitlecatalyst2.2PVP2Pd2,,,Fig.2PVP2Pd2,Fig.2,2,150min,25,2100%,2222[9];226h,5051%[10],,PVP,TEM,,,Fig.3Hydrogenationof2octene,cyclohexeneandnitrobenzenebythetitlecatalystthecatalytichydrogenationconditions:temperature=25;solvent=ethanol;ratio=2octenemol/Pdmol=100;hydrogenflux=50mL/min,reactiontime=150minFig.3BPVP2Pd90min100%,,98.4%,PVP2Pd,,,3,15nm,,PVP2Pd2,100%,,:[1]NIUYH,YEUNGLK,CROOKSRM.J.Am.Chem.Soc.,2001,123:684026844.[2]LIUYF,HUANGAM,CHENJ.J.Appl.Polym.Sci.,2003,89:366123665.[3],.,2005,(5):2892292.ZHANGSM,LIUTQ.Polym.Mater.Sci.andEn2gin.,2005,(5):2892292.[4],.,2006,(6):2292232.WANGHT,LIUTQ.Polym.Mater.Sci.&Engin.,2006,(6):2292232.[5]DEMIRMM,GULGUNMA,MENCELOGLUYZ.Macromol.,2004,37:178721792.[6]JIACG,JINFY.Macromol.Chem.Phys.,1994,195:7512756.[7]ANTONYR,TEMBEGL,RAVINDRANATHANM.J.Appl.Poly.Sci.,2003,90:3702378.39112:PVP[8]VALODKARVB,TEMBEGL,RAVINDRANATHANM,etal.J.Mol.Cata.A:Chemical,2003,202:47264.[9],.,2007,(6):5142518.YUJX,LIUTQ.ActaPolymericaSinica,2007,(6):5142518.[10]ZHARMAGAMBETOVAK,SHELUDYAKOVYL,SELENOVABA.J.Mol.Cata.A:Chemical,2001,177:1652170.PreparationofPVPSupportedPalladiumFibrousCatalystandItsApplicationinHydrogenationYUJian2xiang1,2,LIUTai2qi2(1.CollegeofMaterialsScienceandEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China;2.ResearchCenterofEcomaterial,BeijingInstituteofPetrochemicalTechnology,Beijing102617,China)ABSTRACT:Catalyticpalladiumnanoparticlesonpolyvinylpyrrolidonewerepreparedbearinganano2fibrousmophologyviaelectrospinningandheatcross2linkingtechnique,thetitlecatalystwascharac2terizedbySEM,TEM,UVandTG.Thecatalyticpropertywasevaluatedbyhydrogenationof2octene,cyclohexeneandnitrobenzeneinethanolandtheyieldofoctaneandcyclohexanereachedupto100%atnormaltemperatureandunderhydrogenpressure.Keywords:electrospinning;hydrogenation;olefin;nanometer(190continuedfromp.190)[6],,,.,2003,19(5):4642468.YAOSW,LIUHQ,ZHANGWG,etal.ActaPhys.2Chim.Sin.,2003,19(5):4642468.[7],,.,2003,61(2):2402244.WANGBX,LIJ,ZHAOXP.ActaChim.Sinica,2003,61(2):2402244.[8]TIANDT,HUWB,ZHENZ,etal.J.Appl.Polym.Sci.,2006,100:132321327.PreparationandCharacterizationofSodiumCarboxymethylcellulose/TiO2NanocompositesTIANDa2ting1,CHENXi2qing1,GUOMiao2miao1,HUWei2bing1,XIEHong2quan2(1.SchoolofChemicalandEnvironmentalEngineering,HubeiInstituteforNationalities,Enshi445000,China;2.DepartmentofChemistry,HuazhongUniversityofScienceandTechnology,Wuhan430074,China)ABSTRACT:Titaniumdioxide(TiO2)nanoparticlesweredispersedintosodiumcarboxymethylcellulose(CMC2Na)matrixtogetnanocompositesthroughblendingmethod.Thenanocompositeswerecharac2terizedbyFouriertransforminfraredspectra(FT2IR),thermogravimetry(TG),andtransmissionelec2tronmicroscopy(TEM).TheresultsindicatesthattheFT2IRcharacteristicpeaksofCMC2Nachangeevidentlyastheintroductionofnano2TiO2,thenano2TiO2particlesarefinelydispersedintheCMC2Na/TiO2nanocomposites,asshownintheTEMimages,andthethermostabilityofCMC2Na/TiO2nanocompositesisbetterthanthatofCMC2Nafilm.Moreover,themechanicalperformanceofnanocompositeshasbeenimproved.Keywords:sodiumcarboxymethylcellulose;nano2TiO2;nanocomposites;blending4912008