氧化鋅包覆二氧化鈦超微顆粒制備研究

1、南京工業(yè)大學(xué)碩士學(xué)位論文氧化鋅包覆二氧化鈦超微顆粒制備研究姓名：秦華春申請學(xué)位級別：碩士專業(yè)：化學(xué)工程指導(dǎo)教師：徐南平陳洪齡2002.5.1／南京工業(yè)大學(xué)碩士學(xué)位論文AbstractAbstractThestudyprogressofnanometertitaniumdioxide(Ti02)isintroducedinthispaperComparingwithsolid—phaseprocessandgas—phaseprocess

2、，liquid—phaseprocessisconcernedtobethemostpromisingwayforindustrializationButthesolid／liquidseparationandtheagglomerationoftheultrafineparticlesarethebottleneckswhichIm1theindustralizationprogressTheaimofthisresearchisto

3、investigatethecriticalproblemofagglomerationinthepreparationofultrafineparticlesduringliquid—phaseprocessInordertoovercometheproblemofagglomeration，anewideawasproposedinthisstudywhichcombiningtheinorganiccoatingprocesswi

4、thheterogeneousprecipitationmethodofultrafinepowderpreparationThemainobjectivesofthisstudyareinorganiccoatingprocesswithchemicalprecipitationmethodofultrafinepowderpreparationwascombined，andtodevelopanewcontinuousprocess

5、ofultrafinepowderpreparationTi02particlewaschosenastheresearchmaterial，whichhasbeendrawingconsideringat【entionduetothevarietyofitsapplicationsZincoxide(ZnO)layerdepositedontheprecursormetatitanicacid(H2Ti03)wasusedtoelim

6、inatethegenerationofagglomeratedmaterialsinthecalcinationprocessThecoatingprocessofZnOontheprecursormetatitanicacid(H2Ti03)wasstudiedAnautotitrationexperimentalinstrumentwassetuDtocarryoutthecoatingprocessThedependenceof

7、thepHvalue，thewayoffeedingandtheamountofcoatingmaterialwerealsoinvestigatedEffectsofdifferentdispersantsonthedispersionofhydrousTi02particlesinaqueoussolutionwereinvestigatedThecentrifugalsettlingandthesizedistributionof

8、thedispersedparticlesinaqueoussolutionwereemployedtocharacterizetheparticledispemionbehavionThezetapotentialofparticlesinaqueoussolutionwasmeasuredtoanalyzethedispersionmechanismofdifferentdispersantsBasedonthetitaniumpi