納米TiO-,2--Ti金屬陶瓷復(fù)合膜的制備及其性能研究.pdf

1、華南理工大學(xué)碩士學(xué)位論文納米TiOTi金屬陶瓷復(fù)合膜的制備及其性能研究姓名：王怡紅申請學(xué)位級別：碩士專業(yè)：材料加工工程指導(dǎo)教師：隋賢棟20030501華南理工大學(xué)工學(xué)碩士學(xué)位論文AbstractInorganicTi02membranehasrecentlyreceivedagreatdealofattentionforuseinmembranefiitrationprocessandmembranereactors，membranec

2、atalysisbecauseofitsthermal，chemical，mechanicalstability，andnanometer—sizedTi02photo—catalystLowfluxandmechanicalintensitYrestrictthemembranedevelopingMetalmembranehasmanyexcellentpropertiessuchashighmechanicalstrength，f

3、ineheattransferabilityandeasytobesealedintostructureetcThemetal—ceramicmembranesupportedbythemetalmembranetubehasbeenwidelyresearchedinordertoimprovingthepropertiesofmembraneItensureshighflux，highmechanicalstrength，andhi

4、ghfilterselectivityPreparationandcharacterizationofporousnanometer—sizedTi02／Timetal—ceramicmembranehavebeenstudyedinthispaperThenanometer—sizedTi02contr011ayersupportedbytheporousmetaltitaniummembranetube(theapertureisb

5、etween5and12um，theporosityisabove32％)，whichhasthecharacteristicofseparateandphoto—catalyst，canbeobtainedbyrapidgelationprocessingofsolsinshortengeltimeInthistechnique，spray，pulverization，drynessandformingmembraneareoccur

6、redinthesametime，overcomeingthedefectofthetechniqueofdip—coatingandscrubing，suchasforbiddingthesolparticleenteringthebigholeofthemetalmembraneAlso，theprocessofdrynessandaggloⅢerationaretakenplaceinthesametime，sotheeffici

7、encyisveryhighandthetechniquehasawidelyapplicationforegroundInthispaper，theclearsolscanbeobtainedatnealy25℃withsufficientdispersingThesuitableTi4／H(t001)isabout22：1，Ti4／H20isabout0006：l，C2H50H／Ti”isabout10：1Thefactorsins

8、ol—gelprocessinfluencingonthesolsarediscussedWithXrayandTEM，theTi02powderpresentsasanataseinlowtemperatureTheparticulatesizeislargeningwiththetemperaturerisingTheaverageporesizeofTi02is3nmThesuitableconcentrationofsolisb