二苯并噻吩及其加氢中间体在体相金属磷化物上的加氢脱硫反应-豆柴文库

您所在位置：网站首页 / 二苯并噻吩及其加氢中间体在体相金属磷化物上的加氢脱硫反应.docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

文本预览

二苯并噻吩及其加氢中间体在体相金属磷化物上的加氢脱硫反应
Title:HydrogenationandDesulfurizationReactionsofDibenzothiopheneanditsHydrogenationIntermediateonHeterogeneousMetalPhosphides
Introduction:
Dibenzothiophene(DBT)anditshydrogenationderivativesplayasignificantroleintheproductionofcleanfuelsandchemicalsduetotheirpresenceinsulfur-containingcrudeoilfractions.ThedesulfurizationofDBTisoneofthemostcriticalstepsinthehydrodesulfurization(HDS)processfortheupgradingofpetroleum,assulfurcompoundsaremajorcontributorstoairpollutionandcatalystpoisoning.TheuseofmetalphosphidecatalystsinthehydrogenationanddesulfurizationofDBTanditsintermediateshasgainedattentionfortheirhighcatalyticactivityandselectivityinsulfurremoval.ThispaperaimstoreviewtherecentadvancementsandmechanismsofhydrogenationanddesulfurizationreactionsofDBTanditshydrogenationintermediatesonheterogeneousmetalphosphides.
Hydrogenationofdibenzothiophene:
ThehydrogenationofDBTinvolvestheadditionofhydrogenatomstoitsaromaticring,therebysaturatingthemolecule.Thereactioncanproceedviathehydrogenationofthearomaticdoublebondsorthecleavageofcarbon-sulfurbondsfollowedbyhydrogenation.Metalphosphides,suchasMoP,Ni2P,andCo2P,haveshownpromisingcatalyticactivityforthisreaction.Thesynergisticeffectbetweenmetalandphosphorusinthesecatalystsenhanceshydrogenactivation,improvingtheoverallhydrogenationefficiency.Severalstudieshaveinvestigatedtheeffectofdifferentparameters,suchastemperature,pressure,reactantconcentration,andcatalystmorphology,onthehydrogenationperformance.TheseinvestigationshaveprovidedinsightsintothereactionkineticsandoptimalreactionconditionsfortheselectivehydrogenationofDBT.
Desulfurizationofdibenzothiophene:
Desulfurizationisachallengingprocessduetothehighstabilityofthecarbon-sulfurbondinDBT.MetalphosphideshavebeenreportedtoeffectivelycatalyzethedesulfurizationofDBTtoproduceitscorrespondinghydrodesulfurizedproduct,biphenyl.ThedesulfurizationmechanisminvolvestheadsorptionofDBTonthecatalystsurface,followedbythecleavageofcarbon-sulfurbondsandsubsequent