AICI-,3-固載化催化劑的研制及其在異丁烯低度聚合中的應(yīng)用.pdf

1、大連理工大學(xué)碩士學(xué)位論文AICI固載化催化劑的研制及其在異丁烯低度聚合中的應(yīng)用姓名：石先哲申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：蔡天錫20000601Inthisdissertation，thepreparationofAICl3immobilizedcatalyst(AC一1)anditsperformanceintheselectivepolymerizationofisobuteneinC4petroleumfractionw

2、asinvestigatedTheAC一1catalystwaspreparedbyreactingAlel3withyA1203Itcontainsabout7_4wt％AICI；aMthevalueofxis22ThisindicatedthatthestructureofAlCl2O—isformedonthesurfaceofAC1Theinfluenceofporestmctureandparticlesizeofthesup

3、portyA1203ontheperformanceofAC一1indicatedthatthepolymerizationprocessiscontrolledbyinternaldiffusionThemacro，meso—dualporestructureandsmallparticlesizeyA1203asasupportcaneliminateefficientlytheinfluenceofinternaldiffusio

4、nandraisethestabilityandactivityofcatalystTheinfluenceofreactiontemperatureandLHSVandtheconcentrationofisobuteneintherawmaterialonthepolymerizationofisobuteneissignificientTheconversionisabout94％andtheselectivityisabout9

5、2％withthemolecularweightofpolyisobuteneabout1300undersuchreactionconditionsasT=30℃LHSV=2h。andtheconcentrationofisobuteneiS277％，ThestabilityofAC一1isexcellentAlong—termconsecutivereactionwascarriedonatT=32～34C，LHSV=2h～andP

6、=I0MPaAfter1000h，theconversionremained85％Till2000h，theconversiondroppedtO57％Duringthewholetime，theselectivityandthemolecularweightchangedlittleandtheywere90％and1100，respectivelyOneoftheimportantreasonsthatthecatalystlost