介孔材料及有機(jī)無機(jī)復(fù)合二氧化硅微球的制備與表征.pdf

1、Y1041844⑧申請同濟(jì)大學(xué)理學(xué)碩士學(xué)位論文介孔材料及有機(jī)無機(jī)復(fù)合二氧化硅微球的制備與表征(本論文得到同濟(jì)大學(xué)理科基金項目(1380219043)的資助)培養(yǎng)單位：一級學(xué)科：二級學(xué)科：研究生：指導(dǎo)教師：理學(xué)院化學(xué)系化學(xué)物理化學(xué)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