简介：

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：

简介：

简介：

简介：以2,6-二甲基苯酚、氧气为原料,氨水与乙酸铜为催化剂,合成得到了3,3′,5,5′-四甲基-4,4′-联苯二醌,得到反应的最佳条件为:2,6-二甲基苯酚的浓度为0.1g/mL,氨水与乙酸铜的摩尔比为0.43,温度为75℃,反应时间为6h,产率达到60%.

简介：Alkylationoftoluenewith2-chloro-2-methylpropane(t-Bu-Cl)tosynthesizepara-tert-butyltoluene(PTBT)wascarriedoutinthepresenceoftriethylaminehydrochloride-aluminumchlorideionicliquidsusedasthecatalyst.TheionicliquidswerepreparedwithdifferentmolarratiosofEt3NHCltoAlCl3,andtheeffectofthemolarratiobetweenAlCl3andEt3NHCl,thereactiontime,thereactiontemperature,theionicliquiddosage,aswellasthemolarratiooftoluenetochloro-2-methylpropaneonthealkylationreactionoftoluenewithchloro-2-methyl-propanewasinvestigated.ThetestresultsshowedthattheacidicionicliquidspreparedwithEt3NHClandAlCl3hadgoodactivityandselectivityforthealkylationreactionoftoluenewithalkylchloridetoproducePTBT.TheoptimalreactionconditionswerespecifiedatanAlCl3toEt3NHClratioof1.6,areactiontemperatureof20℃,amassfractionoftoluenetoionicliquidof10%,andachloro-2-methylpropanetotoluenemolarratioof0.5.Underthesuitablereactionconditions,a98%conversionofchloro-2-methylpropaneandan82.5%selectivityofPTBTwereobtained.Ionicliquidscouldbereused5timeswithitscatalyticactivityunchanged,andtheregeneratedionicliquidscanberecycled.

简介：

简介：

简介：

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.

简介：

简介：为了更好地解决糠醛装置的结焦问题，降低糠醛消耗、延长装置开工周期，上海高桥分公司糠醛装置于2005年6月开始在循环糠醛中注入缓蚀剂SF-121D（Ⅱ），以代替原有的单乙醇胺。通过一段时间的试生产，证明注加该缓蚀剂后，循环糠醛和塔-7排水中Fe^2＋浓度明显降低，具有显著的防腐防焦效果。

简介：

简介：

简介：3月份，在全球股市上扬、美联储意外购入长期美国公债等利好消息的带动下，国际油价强劲反弹。WTI、英国布伦特原油以及亚洲迪拜原油的现货价格平均为每桶48．00美元、46．54美元和45．59美元，较2月份分别上升了8．84美元、3．47美元和250美元，环比分别增长28％、8％和6％。

简介：OnOctober18—19,2018,threeR&DachievementsforrealizingtheChinesecontentofcoalchemicalindustry,includingtheDCSsystemforSinopec’slargecoaldeepprocessingproject,themethanolsyngascompressortrain,andthelargewater-cooledandgas-cooledmethanolsynthesisreactors,hadpassedtheappraisalinOrdoscityofInnerMongolia.ItislearnedthatthesethreeprojectsarebeingappliedforthefirsttimeinChina’scoalchemicalindustrytosymbolizenewbreakthroughsintheChinesecontentofmajorequipmentownedbytheSinopecCorp.,whichboastsarangeofindependentintellectualpropertyrightstopushforwardthetechnicaladvancementofnationalindustry.

简介：根据3号FCC装置运行情况，从物料平衡、产品分布、能耗物耗等方面进行分析，发现装置在运行过程中存在的问题，寻找对策，以便装置在更优化状态下运行。

简介：针对3号苯酚丙酮装置生产中的丙酮褪色问题，分析生产中影响褪色的物质及原设计对褪色指标的工艺控制，通过实验研究，提出用降低丙酮产品中的丙醛含量来解决褪色问题的方法，并找出了丙醛含量波动的直接原因，为实施生产过程控制提出了有效的措施。

简介：