C4-C6烷烴催化氧化為醋酸、馬來酸酐、甲基馬來酸酐.pdf

1、湖南大學(xué)碩士學(xué)位論文C4C6烷烴催化氧化為醋酸、馬來酸酐、甲基馬來酸酐姓名：陳傳秀申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工程與工藝指導(dǎo)教師：周小平20050521AbstractMaleicanhydride，methyl—maleicanhydride，andaceticacidareimportantfeedstocksinchemicalindustry，whicharewidelyusedassynthesisintermediatesC

2、4一C6AlkanescanbeobtainedfromnaturalgasandgeneratedinalargescaleItisofhighlyimportanttoconvertthesealkanestoalkyloxygenatesInthisresearchwork，wehaddevelopedaseriesofVMoObasedcatalysts，overwhichisobutane，pentane，andcyclohe

3、xanecanbehighefficientlyconvertedtomaleicanhydride，2methylmaleicanhydride，andaceticacidattemperaturebelow330℃Atotaloxygenate(aceticacid，maleicanhydrideandmethylmaleicanhydride)selectivityover81O％withisobutene，pentane，orc

4、yclohexaneconversionover380％wasobtainedoverthesecatalystsInthestudyofpossiblereactionpathways，theoxidationofseveralpossibleintermediates，suchasisobutene，cyclohexene，2methyl1一propanol，tertbutanol，and2methylacrylicacidoxid

5、ationswerealsocarriedoutoveraVMoOcatalystInisobuteneoxidation，aceticacidand2methylmaleicanhydrideweredetectedasproducts，whilemaleicanhydridewasnotfoundinthereactionIntheoxidationofcyclohexene，benzeneandphenolweredetected

6、asmajorproducts，whichisdifferentfromthatobtainedincyclohexaneoxidationIn2methyl1propanoloxidation，themajorreactionswereterminalcarbonoxidationanddeepoxidation，withoutformingmaleicanhydrideand2methylmaleicanhydrideIntheox

7、idationoftert—butanoloxidation，thedehydrationandisomersionandtheirsubsequentdeepoxidationconstitutedthemajorreactions，andnomaleicanhydrideand2mathylmaleieanhydrideweredetectedoutTheresultsofmethylacrylicacidoxidationindi

8、catethatthe2methylmaleicanhydrideandmaleicanhydrideformationdidnotthrough2methylacrylicacidasanintermediateBasedontheseexperimentalresults，itisdeducedthatintheoxidationreactionsofisobutane，pentane，andcyclohexane，thecrack

9、ingandrecombinationofcarbon—carbonbondmightbethemajorsteps，whichleadtotheaceticacid，maleicanhydride，and2methylmaleicanhydrideformationIntheoxidationofisobutaneandpentane，aromaticcompounds，suchasbenzoicacidandphthalicanhy