中孔分子篩mcm41合成及改性

1、北京服裝學(xué)院碩士學(xué)位論文中孔分子篩MCM41合成及改性姓名：鄭巖申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工程指導(dǎo)教師：傅吉全20050201北京服裝學(xué)院碩士學(xué)位論文AbstractIntheprecedingpartsoftheexperiments，誦tllwaterglassassilicasource，activealuminaasaluminumSOUreeandhexadecyltrimethylammoniumionastemplate

2、silicaMCM41materialswerepreparedbythehydrothermalcrystallizingmethodTheinfluenceoftheoperatingconditionandmaterialratioofsilicaMCM一41werestudiedindetailTheresultsindicatethatthesuitablesyntheticconditionsofsilicaMCM41are

3、thatcrystallizingtemperatureequalsto120“(2，crystallizingtimeequalsto26hoursbythehydrothermalcrystallizingmethod，thevalueofpHofgelequalsto10，n(CTBA)：n(Na20)：n(H20)：n(A1203)：n(Si02)=O08：03：30：O05：1ThenthestabilityofsilicaM

4、CM41aleinvestigatedTheresultsshowsthatthethermalstabilityisgoodthehydrothermalstabilityisbad，whichisMCM41’SinherentflawIntherearpartsoftheexperiments，themainpurposewemodifiedMCM一41istoimprovethehydrothermalstabilityFirst

5、ly，WeintensifiedthejunctionofparticulateMCM41throughSi02modificationSecondlyweincreasedtheporewallthicknessthroughintensifiermodificationInadditionMCM一41’SacidityWaSreinforcedbyAImodificationThenthepropertiesofmodificati

6、onsilicaMCM41aleinvestigatedsystematicallybyXRD，nitrogenadsorptionTPDTheyindicatethattheeffectofmodificationwitlintensifieristhebestandthereisRnoptimaldosageThatis，montensifier)：m(MCM41)2：10Bythese，intensifiermodifiedMCM

7、041WaSmodifiedbyA1againItincreaSesacidsites，andatthesametime，in跚lreSthatMCM41haScatalyticactivityaftermodifieationKeywords：mesoporousmolecularsievesMCM一41；thermalstability：hydrothermalstability；acidsites；nitrogenadsorpti