噻吩的選擇氧化及臨氫催化轉(zhuǎn)化脫硫研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文噻吩的選擇氧化及臨氫催化轉(zhuǎn)化脫硫研究姓名：左廣玲申請學(xué)位級別：碩士專業(yè)：工業(yè)催化指導(dǎo)教師：郭洪臣王祥生20060601噻吩氧化脫除及臨氫轉(zhuǎn)化脫除研究StudyonSulfurRemovelofThiophenebySlectiveOxidationandCatalyticConversioninHydrogenAtmosphereAbs仃actThiophenegnevouslyinfluencestheprod

2、uctionofhighqualityehemicalsandcleangasolineThispapermainlystudiesonthesulfttrremovalofthiophenebyslectiveoxidationandcatalyticconversioninhydrogenamaosphereThestudyontheselectiveoxidationofthiopheneinliquidephasewascarr

3、iedoutwithcokingbenzenerawmaterialandTS一1／I1202systemTheeffectofreactiontemperatureandH202／Thiophenemolarratioweresystematicallyinvestigated，Besides，oxidationproducts，regenerationtimesandthechangesphysicochemicalproperti

4、esofcatalystswerestudiedResultsshOWthatundertheconditionsofreactiontemperatureof70℃andtheratioofHz02／thiophenel：4theremovalpercentageofsulfurincockingbenzeneCanreach98％within6h’SreactionThestudyontheremovalofthiopheneons

5、olidacidcatalystingas—solidphaseinthepresenceofhydrogenwasperformedwithapulsedmicroreactorchromatographysystemandmodifiednanoHZSM5zeoliteGC—MSwasusedtOanalysisthedistributionofreactionproductunderdifferentconditionsResul

6、tsshowtllatinadditiontotheformationofH2Sbydesul【phurization，newsulfurcontainingcompoundssuchastbutylsulfalcohol，2methylthiophene，3methylthiopheneandbenzothiophenearealsoproducedduringtheconversionofthiopheneoverthediffer

7、entcatalystsBothatmosphereandtheacidityofcatalysthavesignificantinfluenceonproductdistributionComparedwithnitrogentheUSeofhydrogen舔carryinggasCanpronouncedlypromotetheconversionanddesulphurizationofthiopheneevenifunderat

8、mosphericconditionSuchalleffectofhydrogencarrierisconnectedtothesupplyofhydrogenatomsfurthecrackingofthiopheneviatheactivationofhydrogenmoleculesonLewisacidsitesItiSobservedthattheeffectofhydrogencardercallbeenhancedbyde

9、creasingtheconcen仃afionandthesⅡengthofBronstedacidsiteofthecatalystthroughsuitablemodificationsandincreasingtheratioofLacidsitestoBacidsitesTreatingthellanoHZSM5zeolitewithpuresteamorwithammoniacontainingsteamhasnoobviou

10、simpactonsulfurremovalofthiopheneHowever，themodificationofthezeolitewithLa203and／orNiOCanremarkablyimprovedthedesulfurizationcapabilityofthecatalystsKeyWords：Thiophene；Desulfurization；TS1／H202；Pulsedmicroreactorchromatog