简介:二新奇的灰更少添加剂-benzothiazole衍生物包含硼和氯,OBC和BBC,被综合。在在油菜籽的添加剂上油的不同集体比率(RO)的OBC和BBC的tribological表演在一台四球的机器上被检验。油样品润滑的更低的钢球的穿的表面借助于扫描电子显微镜学(SEM)被分析。测试结果显示出那OBC,BBC在底有好溶解度上油,并且能有效地增加基础油的带负担的能力。包含1.5m%BBC的油样品的最大的非抓住负担是1117N,它2.3倍于基础油的。OBC和BBC能改进禁止性能和基础油的热稳定性的反穿和腐蚀,谁的起始的分解温度在350°C上面。然而,在不同集中的OBC和BBC能增加基础油的磨擦系数。油润滑的钢球的SEM形态学取样包含1.5m%添加剂似乎比形成的基础油,和疤的更一致、光滑是很浅的。
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简介:TheresultsofcommercialapplicationoftwotypesofC_8aromaticsisomerizationcatalystsunderdifferentfeedconditionswerecomparedtogainaninsightinthetechno-economicalbasisforselectingpropertechnologicalrouteattheplant.Thecomparisonrevealsdifferencesineveryaspectoffeedconsumption,unitcapacity,productoutput,productdistribution,andunitprocessparametersdependinguponwhichcatalysttypeisadoptedbytheintegratedPXcomplex.Thetypeofaromaticsisomerizationcatalysthasitsinfluenceontheplantscale,theconstructioncost,theprocessunitcapacityandtheproductcost,withthemagnitudeofitsimpactvaryingwithchangingfeedconditions.
简介:OnDecember12,2013theproject'Developmentandcommercialapplicationofcontinuousliquid-phasedieselhydrotreating(SLHT)technology'jointlyundertakenbyRIPP,SEI,theShijiazhuangRefiningandChemicalCo.(SRCC)andtheAnqingPetrochemicalCo.haspassedthetechnicalappraisalorganizedbytheScienceandTechnologyDivisionofSINOPECinBeijing.
简介:SixNi-MocatalystswithdifferentmetalcontentswerepreparedandcharacterizedbyN2adsorptionandX-raydiffractometry.TheactivephasemicrostructureofthesecatalystswasexaminedbytheRamanspectroscopy,temperatureprogrammedreduction(TPR),X-rayphotoelectronspectroscopy,andhigh-resolutiontransmissionelectronmicroscopy.Hydrodesulfurization(HDS)activityofcatalystsampleswereanalyzedinaflowfixed-bedmicroreactor.ThesulfidationdegreeofMoandthelengthoftheMoS2slabslightlyincreasedwiththeamountofmetalloadedfollowingsulfidation.Thissmallchangeisattributedtopolymolybdatespeciesobservedinalltheoxidizedcatalysts.Weakmetal-supportinteractions,asdeterminedbytheTPRtechnique,increasedtheNiSxsulfidationphaseandMoS2slabstacking.TheHDSactivityofthecatalystsamplesincreasedwiththenumberofactivesites.Forhighmetalloadingcatalysts,theirHDSactivitywasnearlyidenticalbecausethesulfuratomscannoteasilyapproachactivesites.ThischangeiscausedbythelargenumberofstackedlayersintheMoS2slabsaswellasthedecreaseinthespecificsurfaceareaandporevolumeofthecatalystsampleswithanincreasingmetalloading.
简介:ThepolycrystallinephaseWO3/g-C3N4wassynthesizedunderstirringusingtungstenicacid(H2WO4)andgraphiticcarbonnitride(g-C3N4)asrawmaterials.ThecatalystwascharacterizedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),energydispersivespectroscopy(EDS),theFouriertransforminfraredspectroscopy(FT-IR),andtheBrunauer-Emmett-Telleranalysis(BET).ThepolycrystallinephaseWO3/g-C3N4wasdeterminedbyXRDtechnique.TheoxidativedesulfurizationprocesswasinvestigatedusingWO3/g-C3N4asthecatalyst,30%hydrogenperoxide(H202)astheoxidant,and1-butyl-3-methylimidazoliumtetrafluoroborate([bmim]BF4)ionicliquids(ILs)astheextractant.Theoperatingconditions,includingH2WO4amount,ILdose,H2O2volume,temperature,catalystdosage,andtypesofsulfurcompounds,weresystematicallyresearched.Thedesulfurizationratecouldreach98.46%forremovingdibenzothiophene(DBT)fromthemodeloilunderoptimalreactionconditions.Inaddition,thecatalyticactivitywasslightlydecreasedafterfiverecyclesofcatalysts.Thereactionkineticsanalysisshowsthattheoxidativedesulfurizationsystemwasinaccordwiththefirst-orderreactionkineticsequation.Themechanismofoxidativedesulfurizationwasproposed.