二氧化硅溶胶的制备及性能影响研究

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1.,710049;2.,710048):,SiO2SiO2:[H+],:HFHClHNO3H2SO4HAC,:HACH2SO4HClHNO3HF,:H2SO4HNO3HClHAC,;,,;,,;DMF,,,SiO2:-;;;;:TQ127.2:A:10040935(2007)04021704-,--,,,,,,,-,,,11.11.1.194-2;GKL-11-CR2;DGH-P023A-;AL204-;DELTA320pH-();;WZS-840541;Nanozs1.1.2(AR);(AR);(AR);(AR);(AR);(AR);(AR);N,N-(AR);1.2(TEOS)(EtOH)H2OH+=16.43.80.085,:(05JK208))(04XG12):2006212215:(1976-),,,©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(DMF),15minSiO2SiO222.1()TEOS[1],,,;,,[2],SiO21TEOSEtOHH2OH+=16.43.80.0851/(mPas-1)/h/%HNO35.2310114.93HCl7.576814.17H2SO43.8019015.76HAC2.9921713.42HF70,1,,[H+],:HFHClHNO3H2SO4HAC,:HACH2SO4HClHNO3HF,:H2SO4HNO3HClHAC,HF,;,[H+];H2SO4,[1],2.2,;,,,,,,[3]2.2.1//,78,782TEOSEtOHH2OHNO3=13.86.40.085506070783h12//(mPas-1)/h/%502.99169.514.56603.4415614.78705.2310114.827818.923615.44:DMF2,,,,TEOS,,,,TEOS,TEOS,TEOS,,,,;,,,,,,,[4-5],2.2.211,,,,81220074©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(mPas-1)/h/%13.0216814.3523.7512314.5635.2310114.9248.297314.93513.184515.003,,,,,3h,,3h,,,,,,TEOS,;,,,,[4-5],,,2.3.21h3h5h222,,SiO2,,,2.4,TEOS,,[6],2.4.1/,6SiO2,010%20%30%40%50%DMF,DMF/33DMF/3,DMF912364,:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(V/V)4DMF4,30%DMF(V/V),DMF,DMF,pH,,[7-8],DMF,,3(1)[H+],:HFHClHNO3H2SO4HAC,:HACH2SO4HClHNO3HF,:H2SO4HNO3HClHAC,(2),,,,(3),,,SiO2,(4)DMF,,[1].SiO2[D].:,2004.[2].SiO2[D].:,2004.[3].[D].:,2005.[4],,,.[M].:,1998.[5]./[D].:,2001.[6],,.SiO2[J].,2004,4:3-5.[7],,.SiO2[J].,2006.26(1):30-33.[8],.[J].,2005.25(2):1-4.PreparationofSilicaSolandEffectofPreparationConditionsonItsPropertiesYANGJing1,2,CHENJie2rong1,LIUChun2xiao2(1.Schoolofenergy&powerEngineering,XianJiaoTongUniversity,Xian710049,China;2.SchoolofEnvironment&ChemistryEngineering,XianPolytechnicUniversity,Xian710048China)Abstract:SilicasolwaspreparedusingTEOS,water,ethanolandacidcatalystasthematerials.Theeffectsofcatalyst,reactiontemperature,reactiontimeandadditivesonthepropertiesofsilicasolwereinvestigated.TheresultsshowedthattheeffectofacidcatalystontheviscosityofsilicasolisHFHClHNO3H2SO4HAC,theeffectongeltimeofsolisHACH2SO4HClHNO3HF,theeffectonturbidityandsolidcontentisH2SO4HNO3HClHACwhen[H+]insolisequal.ItisappropriatetoselectHClorHNO3asthecatalysttopreparesolforsilicamembrane.Withthereactiontemperatureincreasedtheviscosity,solidcontentsandparticlesizeofsilicasolincreasesstepbystepandgeltimedecreases.Withthereactiontimein2creasedtheviscosity,solidcontentsandparticlesizeofsolincreasesstepbystepandgeltimedecreased.AddingDMFintosol,theviscosityandsolidcontentsdecrease,geltimeincreasesandparticlesizeofsolincreases.Keywords:Sol-gelmethod;Silica;viscosity;Geltime;Particlesize02220074