简介：Thesynthesisofadamantanefromtetrahydrodicyclopentadieneonzeoliteswithdifferentframeworkstructureswasstudied.TheadamantaneyieldonHYzeolitesishigherthanonHMandHZSM-5zeolites.AmongvarioustypesofdealuminatedHYzeolitestheHEYandHUSYzeolitesgivehigheradamantaneyieldsthanconventionalHYzeolite.Thechangesinactivityandselectivityofthemainandsidereactionsarecorrelatedwiththeacidityandtheporestructureofthezeolites.Toion-exchangetheHYandHUSYzeoliteswithNi2+andLa3+cationsmayfurtherimprovetheactivityandselectivityofthezeolitecatalysts.

简介：TheapplicationofXzeoliteintheareasforproducingpara-xylenebyadsorptiveseparation,N2/O2separation,etc.,wasreviewed,andtheframeworkSiO2/Al2O3molarratio,thecationsandthewatercontentofXzeolitesignificantlyaffecteditsselectivityandcapacity.Astheactivecomponentofpara-xyleneadsorbent,theXzeolitewithaframeworkSiO2/Al2O3molarratioof2.2-2.4coupledwithcationsofBa^2+andK^+,aswellasawatercontentof4.0%-5.0%exhibitedhigherpara-xyleneselectivity.ForN2/O2separation,higherN2capacityandN2/O2separationfactorwereachievedwhentheXzeolitehadaframeworkSiO2/Al2O3molarratioof2.0coupledwithLi^+cations.TheintroductionofanothercationinXzeolitecouldfurtherincreasetheN2/O2separationfactor,whiletheadsorptionofwater,however,couldleadtoaremarkabledecreaseofN2capacity.Besides,theXzeolitecouldbeusedinadsorptiveseparationofhighlypureHeandselectiveadsorptionofCO2,CO,CH4,N2,Ar,andH2.

简介：FollowingthebreakthroughinthetechnologyfordevelopmentandapplicationofmesoporouszeolitedevelopedbyPetroChina’sResearchInstituteofPetrochemicalIndustry(RIPI),thesaidmesoporouszeolitehasbeensuccessfullyappliedinthe1.2Mt/aRFCCunitattheLanzhouPetrochemicalCompany.

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简介：ATi/Sicomplexzeolitehasbeenprepared.X-raydiffractionandinfraredspectrometrystudyhasshownthattwostructures,namelytheZSM-5andMCM-41,existinthesample.BETtestshaverevealedthatthecomplexzeolitecontainsregularmesoporesof2.6nm.UltravioletspectrometryanalysishasshownthattheTispeciesexistinthezeoliteskeletonintheformoftetra-coordinatevalence.TheTi/Sicomplexzeolite(TS-1/Ti-MCM-41)hasapparentlyimprovedcatalyticactivitywithrespecttothemacromolecularorganiccompoundoxidationascomparedtoindividualcomponentsofeitherTiorSicontainingzeolites(TS-1andTi-MCM-41).

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简介：Highlyefficientsheet-likeBiPO4/zeoliteandball-flower-likeBiPO4/zeolitehadbeensuccessfullysynthesizedbyastandardhydrothermalmethod.Theadditionofassistantreagentinthehydrothermalsystemispromisingtoobtainspecialmorphology.Theassistantreagent（EDTA）actsasagrowthmodifierofcrystal.Thepossibleformationmechanismsofsheet-likeBiPO4/zeoliteandball-flower-likeBiPO4/zeolitewereschematicallydiscussed.Adetailedstudyofsheet-likeBiPO4/zeoliteandball-flower-likeBiPO4/zeoliteimpactedonthephotodecolorationmethyleneblue（MB）solutionshowedthatthecompositehadahighlyreusableandstablepropertyforlong-runphotocatalyticapplication.

简介：极端马厩的沸石DASY-0.0被热水的方法在商业规模准备。它的结构进一步为在对待的CP被XRF分析并且描绘前后，.Thezeolite取样的毛孔(CP)清洗经由处理被修改，XRD，NMR，红外，BETandDTA.The结果显示出那与由热水的过程的常规极端马厩的沸石DASY-0.0prepared比较，修改CP的沸石SOYO展出了更高的relativecrystallinity，更大的表面区域和毛孔体积，更高热的稳定性和包含的更少非结晶的非框架艾尔。

简介：AseriesofMo-impregnatedHβsamples,withMoO3loadinginHβzeoliteinthemassfractionrangeof0.5%-6.0%,werestudiedbymeansofXRDandIRinordertocharacterizetheirstructures.Mo/Hβsampies'crystallinityalmostlinearlydecreaseswithincreasingtheamountofMoO3loaded,TheIRspectraandXRDpatternssuggestthattheprogressivedestabilizationoftheHβzeolitestructureiscausedbyincreasingMoloadingin(MoO3+Hβzeolite).Duringthecalcination,Al2(MoO4)3formedfromthedealuminationofHβzeolite,causesthesubstantiallypartialbreakdownofthezeoliteframeworkwhentheMoloadinginMoO3+Hβisrelativelyhigh.

简介：Theatomicallyeconomicandgreenchemicalreactionofdirectaminationofisobutylenetotertbutylamine,particularlyundertherelativemildreactionconditionsavailableforfutureindustrialuse,wascarriedoutoverzeolitecatalystspossessingdifferenttopologicalstructures,fromonedimensionaltothreedimensionalporesystem,andfromsmall8-memberringpore（MRP）tomedium10MRPandfurthertolarge12MRPzeolites,todisclosetherelationshipbetweenthezeoliteproperties/topologiesandtheiraminationperformancesystematicallyunderthemildreactionconditions.Itwasdiscoveredthattheporestructureandtheaciditiesofzeolitecatalystsplayedcrucialrolesintheisobutyleneaminationprocess,andsuitableporediameter（largerthan0.5nmorwithlargesidepockets/cupsintheoutsidesurface）andacertainnumberofmid-strongacidsitesareindispensabletocatalyzetheaminationreaction,whiletoostrongacidstrengthwasnotconducivetotheprocessofisobutyleneamination.Amongthem,zeoliteswithtopologiesofBEA,MFI,MEL,MWWandEUOexhibitedgoodaminationperformance,withwhichtheisobutyleneconversionwashigherthan12.61%（>46.42%oftheequilibriumconversion）underthestudiedmildreactionconditions.DuetothegoodaminationperformanceandthelargeadjustableSi/Al2ratiorange,ZSM-5wasselectedtofurtherstudytheeffectofacidityontheaminationperformancesystematicallyunderthemildreactionconditions,andtheactivity-acidityrelationshipintheaminationprocesswasdisclosed:theaminationactivity（isobutyleneconversion）hadalinearcorrelationwiththeamountofmid-strongBacidityunderthestudiedconditionsoverZSM-5catalyst,whichcanprovideguidanceforfurtherdevelopinghigh-efficientaminationcatalystundermildreactionconditionsavailableforfutureindustrialuse.

简介：Bymeansofmolecularscalemanagement,thetechnologyofseparatingnormalparaffinsfromnaphthathroughadsorptionusing5Amolecularsieveswasstudiedwiththepurposeofoptimizingtheutilizationofnaphtha.Therawmaterialsusedinsteamcrackingandcatalyticreformingprocessescouldbeallocatedproperly.Duringtheadsorptionprocess,theseparationefficiencyofthenormalparaffinswasabove99.9%withthepurityofnormalparaffinsinthedesorptionoilexceeding98.2%.Withtheuseofthedesorptionoilasthefeedstockofsteamcracking,theethyleneyieldincreasedfrom29.7%-35.0%to41.4%-49.2%comparedtothatofthenaphthaintheexistingplantundersimilaroperationconditions.Thepotentialaromaticcontentoftheraffinateoilrosefrom30.6%to43.5%comparedtothatinnaphtha.Theresearchoctanenumberoftheraffinateoilreachedmorethan85withanincreaseof20unitscomparedtothatofnaphtha,sotheraffinateoilismoresuitableforuseasablendingcomponentforhigh-octanecleangasoline.

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简介：有水的沸石的二吸附制冷工作对；乙醇被学习；Dubinin-Astakhov模型的参数是用平衡的试验性的数据的regressed。异质的系数为沸石水对从1.305～1.52变化了；为沸石乙醇从1.73～2.128配对。最大的吸附能力为沸石水从0.315～0.34变化了；0.23～0.28为沸石乙醇分别地。结果证明沸石水对对因为水而且因为更好的平衡表演的蒸发的高潜伏的热，冷却的太阳能合适不仅。在另一方面，沸石乙醇在高新生温度给高吸附能力，它意味着它能在象总线一样的发情引擎系统被使用；汽车。

简介：AseriesofZSM-5zeolites,withthemorphologiesofsphere,spherewithcubicparticlesonthesurface,andcubicparticles,weresynthesizedbyhydrothermalmethodusingn-butylamineasthetemplate,assistedbytheadditionofNaClandcrystalseed.X-raydiffraction(XRD),scanningelectronmicroscope(SEM),X-rayfluorescence(XRF)andtemperature-programmeddesorptionofammonia(NH3-TPD)wereusedtocharacterizethesesamples.Thesamplesweretestedwithtoluenemethylationreaction.Themodifiedsamplecomposedofsphericalparticleswith3μmcrystalparticlesonthesurfacehadapara-xyleneselectivityof95%andmaintained79%oftheinitialconversionafterrunningthereactionfor50h.Thismodifiedsampleshowedthebeststabilityamongthetestedthreemodifiedsamples.

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简介：TheresearchteamheadedbyProfessorWangJunoftheNanjingTechUniversity(NJTech)hasmadeanimportantprogressinthearomaticsalkylationreactionformanufactureofphenolcompoundsoverzeolitecatalyst,whichhasbeenusedtopreparephenolcompoundsviainstantaneousalkylationreactioninvolvingovertenaromaticcompounds(includingbenzene).

简介：SelectivelyconvertingCOandH2togasolineproduct(isoparaffinandolefin)inonestepstillremainsagreatchallenge.WedemonstrateeffectiveH-USYzeolitesupportednano-cobaltbifunctionalcatalystsforthiscatalyticreaction,whicharepreparedbythenovelphysicalsputteringprocess.Particlesofthesputteredcobaltexistinnano-levelandarewell-dispersedonacidUSYzeolite.Easyactivationoftheloadednano-cobaltisalsoachievedinalow-temperaturehydrogenreductionatmosphere.Inthetandemcatalyticreaction,thesputteredbifunctionalCo/USYcatalystexhibitsamuchhigherCOconversionandhigherisoparaffinselectivitythantheconventionalimpregnatedone.ComparedwithH-Mor,H-Betaandotherzeolitessupportedcatalysts,H-USYzeolitesupportedcobaltcatalystshowstheclearestpromotionaleffectontheactivityofFischerTropschsynthesis.Thedescribedsynthesishereinprovidesanewpathwaytosolvetheproblemcausedbythestrongmetal-supportinteraction(MSI)inheterogeneouscatalysis.

简介：TheexternalsurfaceofHZSM-5zeolitewaspassivatedbyliquidsiliceousdepositionandbyacidicsitespoisoningwithlepidine,respectively.Thenmethanol-to-hydrocarbons(MTH)reactionwasinvestigatedovertheaboveas-preparedcatalystsandthedissolublecokeontheseusedcatalystswasanalyzedbyGC-MS,tostudytheroleoftheexternalsurfaceofHZSM-5inthecatalyticreaction.ComparisonwiththeexperimentalresultsbasedonparentZSM-5showedthattheproductdistributionofMTHreactionwasobviouslyinfluencedbytheexternalsurface.Evidenceswerelistedasfollows:(1)thefinalproductonparentHZSM-5showedhigheraromaticselectivity,lowerolefinselectivity,lowerratioofC2/C3+aliphaticsandhigherratioofC3/C4+aliphaticsthanthereactionmixtureproducedbythesolecatalysisofacidicsitesinHZSM-5channel;(2)alittleofpentamethylbenzeneandhexamethylbenzeneintheproductonparentHZSM-5,wasproducedviamulti-methylationofmethylbenzeneontheexternalsurface.TheaboveconclusionmayalsobesuitableforMTHreactionoverotherzeoliteswith10-ringchannel.

简介：ZSM-48zeoliteswithvariousSi/AlratioswerehydrothermallysynthesizedintheH2N（CH2）6NH2（HDA）-containingmedia.TheobtainedsampleswerehighlycrystallizedwithminormixedphasesasevidencedbyX-raypowderdiffraction（XRD）.ThealkalinetreatedZSM-48zeolitesmaintaineditsstructureunderdifferentconcentrationsofNaOHaqueoussolution.Microporesremainedunchangedwhilemesoporeswithwideporesizedistributionformedafterthealkalinetreatment.Thesurfaceareaincreasedfrom228to288m2/g.TheBr?nstedacidsiteshadlittlealterationwhileanobviousincreaseofLewisacidsiteswasobserved.Thehydroisomerizationofhexadecanewasperformedasthemodelreactiontotesttheeffectsofthealkalitreatment.Theconversionofhexadecanehadalmostnochange,whichwasattributedtothepreservationoftheBr?nstedacidsites.Whilehighselectivitytoiso-hexadecanewithanimprovedisotonormalratioofalkaneswasduetothemesoporeformationandimproveddiffusivity.

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