全硅MCM-41作載體的W系和Mo系硫化物及磷化物催化二苯并噻吩加氫脫硫反應(yīng)動力學研究.pdf

1、大連理工大學碩士學位論文全硅MCM41作載體的W系和Mo系硫化物及磷化物催化二苯并噻吩加氫脫硫反應(yīng)動力學研究姓名：王景林申請學位級別：碩士專業(yè)：化學工程指導教師：王安杰20080501全硅MCM41作載體的W系和Mo系硫化物及磷化物催化二苯并噻吩加氫脫硫反應(yīng)動力學研究Abstract功ekineticsofhydrodesulfrization(HDS)ofdibenzothiophene(DBT)catalyzedbyNiMo／MCM

2、41andNiW／MCM41sulfidesaswellasMoP／MCM41andWP／MCM41wasstudiedBoththetheoreticalanalysisandtheexperimentresultsindicatedthattheLangmiurHinshelwoodmodeliSnotsuitabletostudythekineticsoftricklebedintegratereactor，whichinvolv

3、estransportationamongthreephasesTherateconstantsoftheHDSwerewellcorrelatedbyapseudo—first—orderplug—flowreactionmodelTheapparentactivationenergieswerecalculatedbymeansoftheArrheniusequationTheresultsindicatedthat：1TheHDS

4、activityofNiW，MCM41sulfideiscomparabletothatofNiMo／MCM41NiMo／MCM41sulfidesshowedhigherdirectdesulfurizationactivity，whereasNiW／MCM41possessedhigherhydrogenationactivity2TheoptimalloadingofMoP／MCM41iS40％HowevertheHDSactiv

5、ityofWP／MCM41increaseswithincreasingWP10adingMoP／MCM41iSmoreactivethanWP／MCM41inDBTHDS。UndertheoptimallodingtheHDSactivityMoP／MCM41iscomparabletothoseofsulfides，whichalsoshowedhighstability3HDSofDBToverMoP／MCM41predomina

6、telytakestherouteofhydrogenationMoP／MCM一41preparedusingailacidicimpregnationsolutionshowedahigherintrinsicactivitybutalowerapparentreactionratethanthecatalystpreparedwithaneutralorbasicimpregnationsolutionBasedontheabove