负载杂多酸催化剂上合成直链烷基苯的动力学分析

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1、北京化工大学硕士学位论文AbstractLinearalkylbenzenes(LAB)areimportantrawmaterialsforthemanufacturingofcleamingproducts．TheseareusuallymixturesofC9一C14alkylbenzenesobtainedbythealkylationofbenzenewithmixedolefinsusingtoxicHForA1C13ascatalyst．InordertodevelopanenvironmentallyfriendlyprocessforLA

2、Bproduction．anovelsolidcatalyskthesupportedPWcatalysthavebeeninvestigatedwildly．Inrecentlyyears，suppoRedPWcatalysthavebeendevelopedbyPetrochemistryAcademeofBeiJingThealk-ylationreactionofbeuzenewith1-dodecenewasfirstinvestigatedwith12-tungstophosphoricheteroplyacid(ew)andsupported

3、PWasthecatalysts．Aftersupportedonsilica，boththeunitspecificactivityandstabilityofPWareimprovedconsiderably．TheresultsshowthatthesupportedPWcatalystisanovelsolidcatalystwithbettercatalyticperformanceforthealkylationofbenzenewithlongchainalkenes．Inordertodeveloptechnicsforsynthesizi

4、ngLABonsupportedcatalyst，reactionkineticsofbenzeneand1-dodeceneonsupportedcatalystWasinvestigatedinthispaper．Themaincontentinclude：(1)Thestabilityandactivityofsupportedcatalystareevaluated．Theresultsshowthatdesirableconditionofalkylationreactionisbenzeneand1．dodecene16：1,temperatu

5、re120。C，Spacevelocity20hr-1，pressure2．0MPa．ThecatalyststabilityWasalsoinvestigatedatthefollowingreactionconditions．Themolarratioofbenzeneto1-dodeceneWas4：1，totalliquidspacevelocitywas10h一，and120"(2reactiontemperature，respectively，Theresultsshowedthatthecatalystactivitywasobviously

6、decreasedafteritwasundergoneCOntinuous70hreactionatfixedbedreactor．(2)Thereactionkineticsofsynthesizinglinearall(ylbenzenewithbenzeneanddodeceneoverasupportedHeteropolyacidcatalystWasfT北京化工大学硕士学位论文experimentallystudied．Spacevelocitywas20h～，pressurewas2．OMPa,reactiontemperaturewasv

7、ariedintherangeof85-125。C，molarratioofbenzenetododecenewaschangedintherangeof4—，20．Theparallelreactionnetworkwasadoptedtodescribeofthisreactionsystem．AsetofintrinsicrateequationaregmnedbyfittingthemodelofthelaboratoryreactorwithexperimentaldataandmodelparametersareestimatedStatist

8、icaltestsconfirmedtheresults．(3)T