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1、江南大學(xué)碩士學(xué)位論文離子熱合成磷酸鋁分子篩及其表征姓名:李翠霞申請(qǐng)學(xué)位級(jí)別:碩士專(zhuān)業(yè):化學(xué)工藝指導(dǎo)教師:張海朗20080701AbstractAbstractMolecularsieveporousmaterialsplayanimportantpartinmanyapplicationssuchascatalysisandseparationinmodernindustryTraditionallymolecularsievesare

2、synthesizedmainlybyhydrothermalorsolvothermalsystemsInthosesystems,thereactantswereplacedinasealedautoclaveandheatedto100200。Cresultinginallautogenouspressure。Recently,anovelgreenmethod,ionothermalsynthesishasbeendevelop

3、edforpreparingaluminophosphatesmolecularsievesusingionicliquidsasbothsolventandstructure—directingagentTheextremelylowvaporpressureofionicliquidallowsthereactionstakingplaceatnearambientpressureathightemperatureeliminati

4、ngthesafetyconcerns,Inaddition,thefeasibilityofrecyclinguseofionicliquidsCanmaketheindustrialprocessmoreattractiveTherefore,itisexpectedthatthisnewmethodCanbedevelopedtomorewidelyindustrialfieldsinthefutureInthistext,ase

5、riesofimidazolium—basedandhydroxylammoniumionicliquidshavebeensynthesizedHydroxylammoniumionicliquidsarefirstlyusedintheionothermalsystemsPureandtransitionmetalcontainingmicroporousaluminophosphatemolecularsieves誠(chéng)thdiffe

6、rentstructuresweresynthesizedusingtheseionicliquidsasbothsolventandstructure—directingagentTheinfluencesofsynthesisconditionssuchastheratioofrawmaterials(P20s/A1203ratio,HF/A1203radioetc),crystallizationtemperatureandtim

7、e,thevarietyofionicliquidsonthecrystallinityandcharacteristicsofmaterialsweresystematicallyinvestigated,alsotherecyclinguseofionicliquidsOurstudiesconfirmthatthenovelionothermalapproachisasimpleandsafeprocesstosynthesize

8、variousmicroporousmolecularsievesFirstly,aseriesofionicliquidshavebeensynthesized,includingimidazolium—basedandhydroxylammoniumionicliquidsAcommontwo—stepspathtoimidazoliumbasedionicliquidandaone—steppathofneutralization

9、tohydroxylammoniumionicliquidhavebeenraisedaccordingtosynthesisprocess。Secondly,Pureandtransitionmetal(Co,F(xiàn)e)containingmicroporousaluminophosphatemolecularsievesweresynthesizedusingaseriesofionicliquidsincluding1ethyl一3一

10、methylimidazoliumbromide([Ernim]Br),1butyl一3一methylimidazoliumbromide([Bmim]Br)and1butyl一3methylimidazoliumtetrafluoroborate(【Bmim][BF4])XRDandFTIRindicatedthatalltheresultingmicroporousmaterialswerewitllSODstructureAlum

11、inum(gallium)phosphateswi也quartzandLTAstructuresweresynthesizedionothermallyin【Emim]BrsystemAluminophosphatemolecularsieveswi也fourstpactures(AEL,A1P0414A,AFIandGIS)weresynthesizedionothermallyinhydroxylammoniumionicliqui

12、dsystemsincludingHEA,HELandTHEALTheresultsshowedthat:Inimidazoliumbasedionicliquidsystems,theoptimumsynthesisconditionswereatlowerconcentrationoforthophosphoricacidandhighertemperatureintherangeof170—190℃for35days。Thecon

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