硅溶胶粒径和分散性的影响因素

23320097()JOURNALOFUNIVERSITYOFJINAN(Sci.&Tech1)Vol.23No.3Jul.2009:1671-3559(2009)03-0233-04:2009-03-06:(20677022):(1980-),,,;(1954-),,,,,,,,(,250022):,,,,,:;85,pH,:;;:TQ127.2:AInfluencingFactorsofParticleSizeandDispersityofSilicaSolYUChang2jiang,LIAOYong2liang,LUYing2hang,SUNZhong2xi(SchoolofChemistryandChemicalEngineering,UniversityofJinan,Jinan250022,China)Abstract:Thesynthesisofmonodispersedsilicasolwithhomogeneousparticlesizewasreportedthroughacatalytichydrolysisrouteusingsiliconpowdersasrawmaterial.Theoptimumconditionofsynthesiswasinvestigatedthroughtestingtheparameterssuchasthetypeandamountofthecatalyst,thewayofsiliconpowderadditionandthereactiontemperature.Testingresultsprovedthatthesyn2thesizedsilicasolhasverygoodmonodispersityandstability.Theoptimumconditionwasobtainedbyoneoffadditionofsiliconpowdersat85underalkalinesuitablepHvalue.Keywords:monodispersity;silicasol;particlesize,,[1],,,[2],,[3-5],,11.1(99.5%,);,(,);(,),(,);HY-2A();DLS3000(Malvern);();pH(Sartorius);()1.2,65,0.05mol,,,,[6];,,,LiOHNaOHKOH(),,70,,30min,50mL,3h,,KOH(0.0750.0500.0250.010mol/L,5),,70,,30min,50mL,3h,,KOH(0.010mol/L,6570758085),,,,30min,50mL,3h,,[7-10],,,1.3:(1),5%(2)(3)1.4MEDUSA[11]WINSGW[12-13]22.1121,,,,,23nm,,,,2,,,,,,,;,,2.2,r=n(SiO2)n(M2O),,3,33432()235323,:,,,,,,,7,,,,,3,,,,,,,pH,,pH,:[1].[J].,1998,14(2):109-114.[2]IlerRK.Thechemistryofsilica[M].NewYork:WileyInter2sciencePublication,1978.[3]GotoKJ.EffectofpHonpolymerizationofsilicicacid[J].PhysChem,1956,60:1007.[4],.[M].:,1980.[5],,,.[J].,1981,39(1):3-13.[6],,.ZrO2[J].:,2002,16(1):22-24.[7],.[J].,2003,1(5):34-39.[8].[J].,1982(5):39-41.[9],.SiO2[J].,2003,25(2):7-10.[10],,,.[J].:,1998,14(1):16-19.[11]PuigdomenachI.MEDUSAVers2[CP].Sweden:RoyalInstituteofTechnology,1999.[12]ErikssonG.Analgorithmforthecomputationofaqueousmulti-component,multiphaseequilibria[J].AnalChimActa,1979,112(4):375-383.[13]RamstedtM,SjobergS.Phasetransformationsandprotonpromo2teddissolutionofhydrousmanganite(-MnOOH)[J].AquaticGeochemistry,2005,11(4):413-431.[14]DekkerC.SolidStateNMRofsilicates[J].PhysToday,1999,52:22-23.[15],,,.,[J].,1985(1):68-75.(:,:)632()23