mg—al復(fù)合金屬氧化物與生物酶催化乙氧基化研究

1、天津工業(yè)大學(xué)碩士學(xué)位論文Mg—Al復(fù)合金屬氧化物與生物酶催化乙氧基化研究姓名：賈莉偉申請學(xué)位級別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：張紀(jì)梅20031201TheStudyofEthoxylationCatalyzedbyMg——A1ComplexMentalOxidesandEnzymesAbstractTwonewappliednonioniCsurfacants(fattyalcoholethoxylatesofthenarrowrang

2、eandfattyacidmethylesterethoxylates)werestudiedMg—A1hydrotalcite一1ikecompoundswassynthsizedbycoprecipitionmethod，andthenwascalcinedWecouldgetMg—A1metalcomplexoxidesascatalystsInaddition，theethoxylationofnoctanolwascataly

3、stedbytheenzymesThedetailsarelistedbelOWTheoptimalprocessparametersoftheethoxylationofn—octanolwereproved，whereaftertheinfluenceofwateronthiSreactionwasstudiedMg—A1metalcomplexoxidescatalyticselectivitygotthroughdetermin

4、ingthecontentofpolytherofproductionwas868％Mg—A1complexoxidescouldbeseparatedbyfiltrationandbeactivatedItwasprovedthatthiscatalysthadagoodgenerationperformanceAtvarioustemperatures，suchas160“C、160℃、166℃、172℃、178℃、182℃and1

5、90℃，thecorrespondingreactionrateconstantscalculatedwere0017min一、00209min～、00216min一、00271min～、00384min～and00479min～，afterwemensuratedreactionpressure—timerelationsattheaboveeachreactiontemperatureFurthermore，activationen

6、ergyobtainedbyhrrehniusequationwas583KJ／m01Wemadecomparisonbetweenpropertiseofnarrowrangeethoxylatedn—octanolobtainedwithcomplexoxidesandthoseofbroadrangeethoxylatesinthepresenceofKoHItwasfoundthattheformerwerebetterthan

7、thelatterAseriesofmetalcomplexoxidescatalystswithdifferentMg—A1molesratioswerepreparedbycoprecipitationThroughalotofexperiments，WefoundthatMg—A1complexoxideswhosemolesratiowas1：1hadthehighercatalyticactivityforthedirecte

8、thoxylationofmethyilaurateFurthermore，Otherprocessconditionsforthesynthsisofethoxylatedmethyllaurate，suchasreactiontemperatureat150。C、catalystamountat04％ofdesignedproduction，wereobtainedItwastestedthatthisheterogenerousc