简介：分散硅石的NiMohydrodesulfurization催化剂被免职降水方法综合。为比较目的，体积NiMo催化剂被一起沉淀获得。分散硅石的NiMo催化剂有高度活跃的金属内容。硅石被采用为活跃部件的完整的利用驱散活跃金属。赌注分析证明分散硅石的NiMo催化剂有一个高表面区域(147.0m2/g)和毛孔体积(0.27mL/g)，而体积NiMo催化剂展出了一个很低的表面区域(87.5m2/g)。传播电子显微镜学结果证明活跃部件在SiO2底层上被驱散。分散硅石的NiMo催化剂和体积NiMo催化剂的X光检查衍射模式被索引到NiMoO4。分散硅石的NiMo催化剂的hydrodesulfurization活动比引用催化剂的高得多并且能直到比那些两次大商业NiMo支持氧化铝的系统每催化剂的克。测试结果的活动也证明分散硅石的NiMo催化剂是有效hydrodesulfurization催化剂。

简介：Inthispaper,theeffectofcatalyticsupportandsulfidingmethodonthechemicalstateofsupportedCo-MocatalystsisstudiedbyXPS.Aftersulfidationwithin-situmethod,themajorityofmolybdenuminCNTsupportedCoMocatalystistransferredtoaspecieswithaformalchemicalstateMo(Ⅳ)inMoS2phase,andtheresttoMo(Ⅴ)whichconsistsofMocoordinatedbothtoOandS,suchasMoO2S2^2-andMoO3S^2-.IncaseofCoMo/γ-Al2O3catalystsulfidedwithin-situmethod,afractionofmolybdenumistransferredtoformalstateMo(Ⅳ)intheformofMoS2,butthereisstillamountofunreducedMo(VI)phasewhichisdifficulttobesulfided.InCoMo/CNTcatalyricsystemsulfidedwithex-situmethod,Mo(IV)intheformofMoS2isdetectedalongwithaportionofunreducedMo(VI)phase,suggestingthatnotalltheMophasesarereducedandsulfidedbyex-situmethod.AsforCoMo/γ-Al2O3,aportionofmolybdenumissulfidedtointermediatereducedstateMo(V)whichconsistsofMocoordinatedbothtoOandS,suchasMoO2S2^2-andMoO3S^2-,inaddition,thereisstillafractionofunreducedMo(Ⅵ)phase.XPSanalysesresultssuggestthatCNTsupportfacilitatesthereductionandsulfidationofactivespeciestoalargeextent,andthataluminasupportstronglyinteractswithactivespecies,herebyproducingafractionofphasewhichresistscompletesulfiding.CatalyticmeasurementsofcatalystsintheHDSofdibenzothiophene(DBT)showthatCoMo/CNTcatalystsareofhigherHDSactivityandselectivitythanCoMo/γ-Al2O3catalyst,whichisingoodrelationwiththesulfidingbehaviorofthecorrespondingcatalyst.

简介：为FCC石油的选择hydrodesulfurization(HDS)的催化剂的反应上的催化剂，添加剂和催化剂准备方法的活跃金属部件的影响被调查，并且有高HDS性能的RSDS-21催化剂和有高选择的RSDS-22催化剂被RIPP开发。为FCC汽油的选择HDS的催化剂的一个新系列的合成装载表明了优秀desulfurization活动和选择，在常规hydrotreating下面，条件能生产在抗爆索引满足国家排放标准和与更少的损失标准的欧元排放的干净汽油产品。在为FCC石油的选择HDS被采用之上的FCC催化剂的使结束的新系列与好稳定性一起有好适应性到不同化工物品。

简介：Thisarticleanalyzedtheproblemsarisingfromretrofittingthe800kt/avirgindieselhydrofiningunitintoa1.0Mt/aOCT-MgasolineHDSunitattherefineryofLuoyangPetrochemicalCompany,andtheoptimizedmeasuresaimedatimprovementsinoperationofHDSunit.ThepreliminarycalibrationresultshaveindicatedthehighdesulfurizationrateandgoodselectivityoftheHDStechnologytofulfillthedemandofLuoyangPetrochemicalCompanyforproductqualityupgradingwiththetargetsoftechnicalrevampfullyimplemented.

简介：AseriesofCoMo/Al2O3catalystsforselectivehydrodesulfurization(HDS)ofgasolinewerestudiedwithRamanspectroscopy,apowerfulmethodthatcreatesspecifcsignalsforthestatesandthedistributionsofoxidicprecursorsandsulfdedactivephases.ThehighertheMoandCo,thelowerthetetrahedrallycoordinatedmolybdate,andthehigherthepolymolybdate.ButtheamountofpolymolybdatedecreasedwhenCoMoO4appeared.Cobalt-promotedpolymolybdatewastheprecursor,anditsrelativecontentcorrelatedwellwiththeHDSselectivity.Forsulfdedcatalysts,addingthecobalt-promoterledtolocaldistortion-disorderoftheMoS2structureandtheformationofaCoMoSphase.Thismethodcanprovideimportantinformationfordesigningnewindustrialselective-HDScatalysts.

简介：Ni2P/ZrO2-SBA-15catalystswithdifferentzirconiumn-propoxide/SBA-15massratiosweresynthesizedtoevaluatetheirdibenzothiophenehydrodesulfurizationcatalyticactivity.EffectofZrO2introductionwasinvestigated.SupportsandcatalystswerecharacterizedbyBET,XRD,29SiNMR,XPSandFTIR.TheresultsindicatedthatzirconiumwasincorporatedintoSBA-15intheformsof[(–O–)2Si(–O–Zr)2]and/or[(–O–)3Si–O–Zr],andthattheSBA-15frameworkstructurewasmaintainedafterincorporationofZrO2.Withzirconiumcontentincreasing,ZrO2wastransformedfromamorphousphasetotetragonalphase.ZirconiumincorporationintoSBA-15supportscouldfacilitatetoformmoredispersedNi2Pactivephase.TheremightbesomeinteractionoccurringbetweenthePandZrspecies.InadditiontoNi2P,anotherkindofactivephase,ZrP,wasformed,whichmightexhibitabetterHDSactivitythanNi2P.Itwasobservedthatatatemperatureof280°C,pressureof3.0MPa,WHSVof6.5h?1andH2tooilratioof450,theNi2P/Zr-SBA(1.5)catalyst,where1.5representszirconiumn-propoxide/SBA-15massratio,showedthehighestDBTconversion,whichwas86.6%,almost35%higherthanthatoftheNi2P/Zr-SBA(0)catalyst.

简介：Compositematerials(AZ-x)werepreparedbymixingthenanosizedHYzeoliteandγ-Al2O3usingthesol-gelmixingmethodandwereemployedasthesupportforNiMocatalysts(NiMo/AZ-x).ThesecompositesandcatalystswerecharacterizedbyXRD,BET,TPD,TPR,HRTEMandFT-IRspectroscopy.ComparedwiththeNiMocatalystsupportedonγ-Al2O3(NiMo/γ-Al2O3),theseNiMo/AZ-xcatalystsshowhigheractivityinthehydrodesulfurization(HDS)ofFCCdiesel,andtheHDSactivityincreaseswithanincreasingHYmasscontentinthecomposites,providedthattheHYmassfractiondoesnotexceed20%.Comparedwithγ-Al2O3,theintroductionofnanosizedHYzeolitecanimprovetheporousstructureofthecomposites,whichcanbenefitthemasstransferofthereactantmolecules.Furthermore,thenanosizedHYzeoliteinthecompositescanmodifytheirsurfacepropertieswhichwouldincreasetheratioofmetalspeciestobetransformedintoreduciblephaseinlowtemperatureregionandmodifythemorphologyoftheMoS2phasestoformmoremulti-stackedMoS2activephaseswithincreaseddispersionofedgesandcornersofMoatoms.