简介：Inthispaper,2-isopropylnaphthalenehasbeensynthesizedbythereactionofnaphthaleneandisopropylbromide,usingtriethylaminehydrochloride-aluminumchlorideionicliquidasthecatalyst.Theeffectofthecatalystcomposition,thereactiontime,thereactiontemperature,theionicliquiddosage,aswellasthemolarratioofthereagentsonthe2-isopropylnaphthaleneyieldwassystematicallyinvestigated.Theoptimalreactionconditionscover:anAlCl3toEt3NHClratioof2.0,areactiontimeof3h,areactiontemperatureof15.0℃,avolumefractionofionicliquidtothemixture(isopropylbromide,n-dodecaneandn-hexane)of9%,andanaphthalene/isopropylbromidemolarratioof4.0.Undertheoptimalreactionconditions,theconversionofisopropylbromidereached98%andtheselectivityof2-isopropylnaphthalenewasequalto80%.ThetestresultsverifiedgoodcatalyticactivityuponusingEt3NHCl-AlCl3ionicliquidasthecatalystforalkylationofnaphthalenewithisopropylbromide.Theactivityoftheionicliquidremainsunchangedafterithasbeenrecycledfor4times.

简介：Chromiumacetylacetonateandbis(diphenylphosphino)isopropylaminewerecoordinatedinsituandsupportedonmethylaluminoxane-modifiedsilica.Thecatalyststructureandeffectsofreactiontemperature,reactionpressureandAl/Crmolarratioonethylenetetramerizationwereinvestigatedindetail.Chromiumwasuniformlyandfirmlyimmobilizedonthesupportandcouldnotbeleachedoffbymethylaluminoxane.Thesupportedcatalyst,uponbeingactivatedwithmethylaluminoxane,exhibitedcatalyticactivityof1.70×107g/(molCr·h)forethylenetetramerizationtoform1-octeneatareactiontemperaturesof80℃,apressureof2.0MPaandanAl/Crmolarratioof300.Thesupportedcatalystpresentedagoodtolerancetohightemperature.

简介：OnJanuary26,2014theproject'Researchanddevelopmentofmonocrystallinemulti-interstitialHTS-3zeolitecatalyst'jointlyundertakenbyRIPPandSinopec’sCatalystBranchCompanyhaspassedthetechnicalappraisalsponsoredbytheScienceandTechnologyDivisionoftheSinopecCorp.

简介：Throughimprovingtheagingprocessduringsynthesisofthesupport,γ-Al2O3withlargeporevolumeandhighsurfaceareawassynthesizedbyafacilesecondaryreformingmethod.Thesynthesisparameters,suchasthereactiontemperature,thefirstagingtemperatureandthesecondagingtemperature,wereinvestigated.Thetexturalpropertiesofγ-Al2O3werecharacterizedbymeansofN2adsorption-desorptionisotherms,X-raypowderdiffractometry(XRD),scanningelectronmicroscopy(SEM),Fouriertransforminfrared(FTIR)spectroscopyandthermogravimetry(TG).TheexperimentalresultsindicatedthatAACHandamorphousAlOOHweretheprecursorsofalumina,whichwereformedviaprecipitationfromsolutionsafterreactionofaluminumsulphatewithammoniumhydrogencarbonate.Theprecursornanocrystallitesgrewandre-assembledduringthesecondaryreformingprocess,whichresultedinanincreasedporesizeandporevolumeandadecreasedbulkdensity.Theas-synthesizedγ-Al2O3materialsfeaturedmeso/macroporosity,largeporevolume(2.175cm3/g),highsurfacearea(237.8m2/g),andlowbulkdensity(0.284g/mL).

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