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1、江南大學(xué)碩士學(xué)位論文棕櫚硬脂的一步法烷氧基化反應(yīng)研究——降低棕櫚硬脂熔點(diǎn)的研究姓名:許志鋼申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):應(yīng)用化學(xué)指導(dǎo)教師:方云20090701AbstractAbstractNaturalfatsandoilareworldwideattentionedasgreenrenewableresourceInadditiontobeingaffordedforhumanconsumption,thelargenumberofoil

2、sandfatsareusedaschemicalrawmaterialswhicharewidelyusedinvariousindustrialfieldssuchasmedicine,food,paintandindustrysurfactants111eonestepoxyalkylationreactionofpalmstearinWasstudiedinthebasisofAIMg—basedcompositecatalys

3、tinthispaperTheScreeningofcatalystandtheexplorationoftechnologyconditionswereinvestigatedPalmstearinWasmodifiedbychemicalmethod,physicalmixingmethodandbiologicalenzymaticmethodSOthatthemeltingpointofpalmstearinWaslowered

4、111eexperimentalconclusionsweredisplayedasfollowing:(1)Fivetypesofcatalystswerepreparedfortheethoxylationreactionofpalmstearin1llehighestcatalyticactivityofA1/Mgcomposites【AI/(AIMg)=060】inresponseWas0252gEO/gCat/min111ee

5、thoxylationreactionofpalmstearinandEOaccompaniedbycatalystwasprovedbyFTIRandESI—MSnleoccurrenceofethoxylationreactionwasconfirmedbysaponificationvalueproductstestandemulsificationpropertiestestThebettertemperatureofethox

6、ylationreactionwaschoseat160—170oCthroughreactionprocessresearchItWasfoundthatpetroleumether(boilingpointrange90120oC)Callsignificantlyimprovethereactionactivityr11lecatalyticactivityinresponsewascutdownbyincreasingearly

7、systempressure(2)Severaltypesofcatalystwerepreparedinthepropoxylationreactionofpalmstearin,nlehighestcatalyticactivityofA1/Mgcomposites[A1/(AlMg)=050]inpropoxylationreactionwasdetectedat01449PO儋Cat/minmpropoxylationreact

8、ionbetweenpalmstearinandPOaccompaniedbycatalystWaSconfirmedbyFTIRanalysis,ESIMSanalysissaponificationvaluetestandtheemulsifyingpropertiestest功ebettertemperatureandtheeligiblepressureweredeterminedat160165oCand03MPa04Mpad

9、ifferentlybythereactionconditionsstudy111ebetterusageamountofcatalystwasm(cat):m(palmstearin)=001:1ItWaSfoundthatthereactivitywasgraduallyreducedwhenrawmaterialsinthemolarration(PO):n(palmstearin)Waschangedfrom05to20inth

10、eprocessThepropoxylationreactionofpalmstearinbeingastepbystepadditionreactionWasproved(3)Themeltingpointofpalmstearinwasloweredbychemicalmodificationphysicalmodificationandbiologicalenzymemodificationmethodsnemeltingpoin

11、toftheproductofethoxylationWasloweredto198oCWhenthemolarratioofpalmstearinandethyleneoxideWas60inthechemicalmethodThemeltingpointoftheproductofpropoxylationWasdroppedto395oCwhenthemolarratioofpalmstearandpropyleneoxideWa

12、s30inthechemicalmethodThe10westmeltingpointofmixedsamplesWasreducedto310oCwhenthemassratioofaetherandpalmstearinwas1:1intheexplorationofthephysicalmixingmethodHowever,itWasfoundthatmixedwithalargenumberoflOWboilingpointi

13、mpuritiescouldmaketheseparationandpurificationprocessdifficultItwasprovedthatfourtypesoflipasereactingwithpalmstearinwasnotsignificantlylowerthemeltingpointofpalmstearinintheinitialbiologicalenzymaticmethodKeywords:palms

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