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

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：許志鋼申請學(xué)位級別：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