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《制備高純氟化鋇和微乳液合成納米氟化鋇的過程的研究》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、AbstractBaF2hasspecialphotoluminescencecharacteristicsasnewscintillatingcrystalandgoodopticalmatrixmaterial．ThehighpurityBaF2waspreparedwithammoniumfluorideandbariumchlorideasrawmaterialinaqueoussolution．ItWasstudiedonthechangesofthestructuralparametersofW
2、／OmicroemulsionsystemsCTAB／alcohol／n-heptane／waterwimtheincreasingofWoorcarboatomicnumbersofstraightchainalcoh01．BaF2andBaF2：Ce3+nanoparticleswerepreparedfromW／Omicroemulsionsystems吼婚
3、n-butanol／n-heptane／water．AnewtechnologyWasthepreparationofthehighpurity
4、BaF2fromammoniumfluorideandbariumchloride．TheoptimumoperationalconditionsforthepreparationofBaF2werereactiontemperature25℃，reactiontime60min,initialmassconcentrationofbariumchloride10％，n(NI-hF)：n(BaCl2)--2．2，theratioofwashingamounttofiltercakeamount=10：1，w
5、ashed3times．ThepurityofBaF2Wasupto99％．Theprocedurehasshortflowrouteandgoodeconomicbenefits．DilutionWasusedtomeasureandcalculatethestructuralparametersofW／OmicroemulsionsystemsCTAB／alcohol／n-heptane／wateratdifferentmoisturecontentsanddifferentalcoh01．IntheW
6、／OmicroemulsionsystemsCTAB／alcohol／n-heptane／water,謝mtheincreaseofmoisturecontent，theradiusofinnerwaterdropletrtw，theeffectiveradiusofparticle＆，thelengthofinterfacelandtheaverageaggregationnumberofsurfactantngraduallyincreased．Butthetotalinterracialareaofd
7、ispersedphaseAdandthetotalparticlecountNdgraduallydecreasedinthissystems．Whenn-ButanolWasthecosuffactant，thesystemof-△Gc0“l(fā)inearlydecrease．WhenmediumchainalcoholandlongchainalcoholWasthecosurfactant，thesystemof_△Gc0斗idecreasedandthenincreased．Asthecarboato
8、micnumbersofstraightchainalcoholincreased，theradiusofinnerwaterdropletRw,theeffectiveradiusofparticle＆，thelengthofinterface1，theaverageaggregationnumberofsurfactantnandGibbsFreeEnergy-△Gkgraduallyincreased．ButthetotalparticlecountNdandthetotalinterracialar
9、eaofⅡdispersedphase～graduallydecreased．BaF2andBaF2：Ce3+nanoparticleswerepreparedfromW／OmicroemulsionsystemsCTAB／n-butanol／n-heptane／water．BaF2andBaF2：Ce3+nanoparticleswerenallosphericalparticles，andthediamete
