制备高纯氟化钡和微乳液合成纳米氟化钡的过程的研究

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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,谢mtheincreaseofmoisturecontent，theradiusofinnerwaterdropletrtw，theeffectiveradiusofparticle＆，thelengthofinterfacelandtheaverageaggregationnumberofsurfactantngraduallyincreased．Butthetotalinterracialareaofd

7、ispersedphaseAdandthetotalparticlecountNdgraduallydecreasedinthissystems．Whenn-ButanolWasthecosuffactant，thesystemof-△Gc0“linearlydecrease．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