资源描述：
《基于苯选择加氢和环己烯水合催化反应过程研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、河北工业大学硕士学位论文苯选择加氢和环己烯水合催化反应过程研究姓名：刘媛申请学位级别：硕士专业：化学工艺指导教师：王延吉20070301苯选择加氢和环己烯水合催化反应过程研究STUDYONTHESELECTIVEHYDROGENATIONOFBENZENEANDHYDRATIONOFCYCLOHEXENEABSTRACTAssemblingmultistepreactionsintoonereactorhasmanyadvantages,suchassimplifyingprocessing,savingresourcesanddecreasingemission.Inthis
2、paper,threesinglereactionsrelatedtoproductionofcaprolactamfrombenzenearestudied,includingtheselectivehydrogenationofbenzenetocyclohexene,thehydrationofcyclohexenetocyclohexanolandtheoxidationofcyclohexanoltocyclohexanone.Basedontheabovework,twointegratedprocessesarediscussedpreliminarily,inc
3、ludingselectivehydrogenationofbenzenewithhydrationofcyclohexeneandhydrationofcyclohexenewithoxidationofcyclohexanol.Theeffectsofoperationconditionsandcatalystspreparationconditionsontheselectivehydrogenationofbenzenewerestudied.Theresultsshowthat,4%Ru-1%Zn/nano-sizeSiO2catalystpreparedbythep
4、recipitationmethodhasthebestcatalyticperformancefortheselectivehydrogenationofbenzene.Undertheconditionsofreactiontemperature120℃,concentrationof-1ZnSO40.2mol·Landreactiontime75min,theyieldandselectivityofcyclohexenereach22.6%and48.9%,respectively,usingthecatalystpreparedatareductiontemperat
5、ureof300℃andwiththemolarratioofNaOHtoRuof6.8:1.XRD,BETsurfaceareaandporedistributionmeasurement,COchemicaladsorptionwereemployedforthecatalystcharacterization.Thereactionconditionsofcyclohexenehydrationwereoptimized.Underthemostsuitableconditionsofreactiontemperature110℃andreactiontime4h,the
6、highestyieldofcyclohexanolis13.5%overHZSM-5(SiO2/Al2O3ratio=25)catalyst.Whenacetophenoneisusedasthesolvent,theyieldofcyclohexenereaches17.7%.Atomicabsorptionspectra,NH3-TPD,FT-IRspectraofadsorbedpyridinewereemployedforthecatalystcharacterization.Theeffectsofreactiontemperature,reactiontimean
7、dtheamountofcatalystsontheoxidationofcyclohexanolwerestudiedaccordingtotheoperationconditionsofcyclohexenehydration.Theresultsshowthattheyieldsofcyclohexanoneareintherangeof14.8%-17.1%.Theintegratedprocessofcyclohexenehydrationwiththeoxidationofcyc
