简介:TheMoS2catalystswerepreparedfromvariousmolybdateprecursorsincludinginorganicandorganicmolybdatecompounds.ThesulfidationdegreeandmorphologyofactivephasesofMoS2activatedbyvariousmolybdateprecursorsinH2S/H2streamatdifferenttemperatureswerestudiedbyX-rayphotoelectronspectroscopy(XPS)andhigh-resolutiontransmissionelectronmicroscopy(HRTEM).TheorganicmolybdateprecursorsleadtoMoS2catalystswithhighersulfidationdegreeandsmalleractivephasestodemonstratehighercatalyticactivityduringhydrodesulfurizaiton(HDS)of4,6-DMDBT.
简介:Throughthehydrogenationexperimentsforremovalofolefinimpuritiesineffluentmixtureobtainedfromalkylationreactorforlinearalkylbenzenesynthesis,thereactionkineticswasstudied.TheexperimentalresultsshowedthatthecatalyticactivityofPd/Al2O3amongfourkindsofcatalystswasthehighest,andtheolefinconversionreached100%whenthereactiontemperaturewashigherthan140℃.Thekineticmodelwasestablishedthroughparametersestimation.Theexperimentalvalidationofthekineticmodelshowedthatthekineticmodelhadhighersimulationaccuracy.Theresultsofpredictionbythekineticmodelindicatedthatwiththeintensificationofreactionconditions,theolefinconversionwouldincreaseandthebromineindexofthelinearalkylbenzenewoulddecrease.UndertheconditionscoveringaWHSVof2.0h-1,atemperatureof90℃,andahydrogenpartialpressureof1.5MPa,theolefinconversionwas99.67%,andthebromineindexofthelinearalkylbenzenecouldbereducedtolessthan20.00mgBr/(100g).
简介:TheSouthwestResearchandDesignInstituteofChemicalIndustryuponundertakingtheNationalScienceandTechnologySupportProgram'CatalystformanufactureofEGviahydrogenationofoxalateandrelatedprocessdevelopment'envisagedinthe'EleventhFive-YearPlan'hassuccessfullydevelopedthePdseriesofcatalystsfor
简介:Recentlythepilotmoving-bedunitformanufacturingaromaticsfrommethanolandtoluenewithco-productionoflow-carbonolefinsdesignedbytheSinopecEngineeringIncorporation(SEC)hasbeenputonstreamsuccessfully.Inthecourseofcommissioning,thepilotunitransmoothly,leadingtohighconversionrateinthemoving-bedreactor,highyieldofxyleneproduct,easyliftofcatalyst,andgoodcokeburnoutresults,withallindicatorscomplyingwiththeexpectedoperatingrequirements.
简介:OnNovember29,2013theShaanxiCoalChemicalsTechnologyEngineeringCenter,Ltd.(SCCTEC),theCNOOCHuizhouRefiningandChemicalCompanyandtheSINOPECLuoyangEngineeringCompany,Ltd.signedanagreementoncooperationindevelopmentofan
简介:HighresolutionmassspectrometryincombinationwithdistillationandSARAfractionationprovidesusanopportunityforin-depthunderstandingaboutthehydrotreatingprocessatthemolecularlevel.Inthisstudy,theatmosphericresiduederivedfromArabianheavycrudeanditshydrotreatedproductswereinitiallysubjectedtodistillationandSARAfractionation.ThesaturateswerecharacterizedbyGCFI/FDTOFMS.ThearomaticsandresinswerecharacterizedbyAPPIFT-ICRMS.Compositionalchangesofdifferentcompounds(paraffins,naphthenes,aromatichydrocarbons,andheteroatomiccompounds)containedindifferentdistillates(vacuumgasoil,vacuumresidue)wereobtained.Moredetailedknowledgeaboutthehydrotreatingprocesswasachieved.