介孔材料及有機無機復合二氧化硅微球的制備與表征.pdf

1、Y1041844⑧申請同濟大學理學碩士學位論文介孔材料及有機無機復合二氧化硅微球的制備與表征(本論文得到同濟大學理科基金項目(1380219043)的資助)培養(yǎng)單位：一級學科：二級學科：研究生：指導教師：理學院化學系化學物理化學劉輝郝志顯副教授二oo七年三月AbstractABSTRACTNowadaysmicrosphcreandmesoporousmaterialsarethehot—pointoftheresearchofmate

2、rialpreparationAsthefastimprovementofnano—materialscience，numerousnewllano—materialissynthesizedandusedinmodemindustrygreatlyMicrosphereandmesoporous，astheimportantpartofllanomaterials，arealseceivesmoreandmoreattentionIn

3、thispaperanewsynthesiswayisusedtopreparetheorganicinorganiccompositemicrosphereandvariousmesoporousmaterialsaresynthesizedbytemplatemethodThematerialswerecharacterizedbyBETTEM，F(xiàn)TIRandDTAThecompositesilicamicrospherewasob

4、tainedthroughthepolymerizationofureaandformaldehydeoccurredinthesilicasolthatpreparedfromthehydrolyzationoftetraethylorthosilicateThroughthetest，itisfoundthatthemicrostructureOfthemicrospherecallbechangedbyvariesthemolar

5、ratioofthereactantandreactconditionThemicrospheresynthesizedasthemolarratioofformaldehydetonreaistwohasacoreshellstructureinitsmicrostructure，andoneofthemolarratioofformaldehydetourgaisonehasanetworkstructureAndinthelatt

6、ercondition，themicrostructureofthemicrosphereischangedfromthenetworkstructuretocore—shellstructureastheproportionofformaldehydeandureainreactantdecreasesimultaneouslyAccordingthecharacterizationthesynthesizemechanismispu

7、tforwardtoAsimpleonestepprocedureisdescribedforthesynthesisofmesoporousmonolithandcompositepowderinwhichhydrolyzationoftetraethylorthosilicateandpolymerizationofureaand舀yoxaloccurredatthesametimeneexperimentresultshowtha

8、tthewhitepowderonlyproductasthemolarratioofglyoxaltoureaisbelowoneWhenthemolarratioof酉yoxaltoureaisaboveone，theporousandsurfaceareasadjustmentofthemesoporousmaterialscallbeachievedbyvariesthemolarratioofthereactantAccord