低压下碱金属碳酸盐催化一步法合成碳酸二甲酯.pdf

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1、ChineseJournalofCatalysis36【2015)1136—1141催化学报2015年g36卷g75)Ilwww．chxb．cnava．1abIeatwww．sciencedIrect．com．：一：，，ScienceDirectELSEVIERjournaIhomePage：www．eIsevier．corn／Iocate／chnjcArticleLOWpressureone。potsynthesisofdimethylcarbonatecatalyzedbyanalkalicarbon

2、ateChunLiu，ShaokeZhang，BaoyiCai，ZilinJinStateKeyLaboratoryofFineChemicals,DalianUniversityofTechnology,Dalian116024Liaoning,ChinaARTICLEINF0ABSTRACTArticlehistory：Amildandefficientprotocolfor幽ealkalicarbonate—catalyzedone，potsynthesisofdimethylcar．Receive

3、d7January2015bonate(DMC1fromepoxide，COzandmethanolwasdeveloped．ThereactionconditionsfortheAccepted29January2015one-potsynthesisofDMCwereinvestigated．Undertheoptimizedconditionsofinitialpressure0．5Published20July2015MPa，120。Candcatalystloadingof7．5tool％．63

4、．5％yieldofDMCwasachievedusingethyleneoxideasthestartingmateria1．Amechanismforthecatalysisbythealkalicarbonatewasproposed．Keywords：@2015，DalianInstituteofChemicalPhysics．ChineseAcademyofSciences．DimethylcarbonatePublishedbyElsevierB．V．A1lrightsreserved．Epo

5、xideAlkalicarbonateOne—potsynthesisLowpressure1．IntroductionDMcwasproducedfrommethano1andphosgeneforthefirsttimeinthe1910s．butthisprocesswaseliminatedinFe．Globalwarmingisofgreatconcernasitcanleadtoaltera．centyearsduetotheuseofthevirulentphosgene[15]．There

6、tionstotheclimate．Forexample．therainfalldistributioncanarenowthreeotherroutesfortheproductionofDMC．Thefirstchangeandthefrequencyofsevereweatherevents，suchasistheoxidativecarbonvlationofmethanolusingCuC1ascata．hurricanesandtyphoonscanincrease『1]．Itisnowwel

7、1estab—1yst．1tsmaindrawbackistheproductionofcorrosivehydrogenlishedthatthereleaseofC02fromanthropogenicactivitieschloride『16]．Thesecondisthecarbonylati0nofmethy1nitritesuchasfossilfuelburningisamongtheleadingcausesofglobaloverPd／carbon．Here，theuseoftoxicC

8、Oisthemainproblemwarming【2,3]．Therefore，considerableeffortshavebeendif17]．Thethirdisthetransesterificati0nmethodinwhicharectedtowardsthedevelopmentoftechnologiesforC02activa—cycliccarbonateisformedfirstfromanepoxide