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  • 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.

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  • 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%.

  • 标签: 3 3’ 5 5’-四甲基-4 4’-联苯二醌 合成 2 6-二甲基苯酚 氧气 原料
  • 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.

  • 标签: 对叔丁基甲苯 酸性离子液体 烷基化反应 氯化铝 催化剂 三乙胺盐酸盐
  • 简介:运用PHAST软件,建立物理数学模型,对LPG储罐泄漏后的事故后果进行了扩散、闪燃、火灾、爆炸的模拟和分析,确定出了泄漏后扩散、闪燃的危险区域范围,得到了火灾热辐射和爆炸超压导致的人员死亡半径、中伤半径和轻伤半径.分析结果可以帮助厂家直观了解发生事故后的危险,进而针对性的采取相应的安全对策措施.

  • 标签: LPG储罐 PHAST 危险区域
  • 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.

  • 标签: oxidative DESULFURIZATION WO3/g-C3N4 heterogeneous CATALYSIS EXTRACTANT
  • 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%。

  • 标签: 国际油价 现货价格 美元 WTI 原油 股市
  • 简介:引言随着我国改革开放的逐步深入,石油产品的供求量迅速增大,各类油料的储运、监测及检验等,都面临着更为方便、有效和可靠手段的开发。本文针对我国石油储运和销售过程所使用的主要几种卧式金属罐,直接给出了水平放置下尺点任意油面高度条件下盛油量的优化计算公式,并利用TurboPascal具有良好的界面设计和强大的计算能力,编制了一套实用计算软

  • 标签: 卧式金属罐 优化计算 软件实现 计算公式 函数子程序 卧式罐
  • 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。

  • 标签: 工艺 丙酮褪色 工艺控制 丙醛工艺 苯酚丙酮装置