酚与氯化胆碱形成低共熔溶剂

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1、SeparationandPurificationTechnology63(2008)710–715ContentslistsavailableatScienceDirectSeparationandPurificationTechnologyjournalhomepage:www.elsevier.com/locate/seppurShortcommunicationHighlyefficientextractionofphenolsandaromaticaminesintonovelionicliquidsincorporatingquaternaryammoniumcat

2、ionVladimirM.Egorov,SvetlanaV.Smirnova,IgorV.Pletnev∗DepartmentofChemistry,M.V.LomonosovMoscowStateUniversity,1/3Leninskiyegory,119992Moscow,RussiaarticleinfoabstractArticlehistory:Twonovelhydrophobicroomtemperatureionicliquids(RTIL)incorporatingquaternaryammoniumReceived13May2008cations:

3、tetrahexylammoniumdihexylsulfosuccinate(THADHSS)andtrioctylmethylammoniumsalicylateReceivedinrevisedform26June2008(TOMAS)havebeenobtained.ThemutualsolubilityofthebothRTILswithwaterandtheirReichardt’sAccepted28June2008polarityindexhavebeenmeasured.Theextractionofaromaticaminesandphenolsint

4、onovelRTILsandtwo1-alkyl-3-methylimidazoliumbis(trifluoromethanesulfonyl)amideshasbeenstudied.Thedepen-Keywords:dencesofRTIL–waterdistributionratioforthestudiedliquidsonthephasevolumeratio,thetimeofphaseIonicliquidscontact,pHvalueofaqueoussolutionsandthesoluteconcentrationhavebeenobtained.

5、Insomecases,Liquid–liquidextractionthesolutedistributionratiosforammonium-basedRTILsareashighasn×104thatismuchgreaterthanPhenolsAromaticaminesforimidazoliumones.Notably,unlikethecaseofimidazolium-basedRTILs,thequantitativeextractionintoammoniumRTILsisachievedevenatthephasevolumeratioVRTIL

6、:Vw=1:20.©2008ElsevierB.V.Allrightsreserved.1.Introductionelsewhere[17,18],somequaternaryammoniumorphosphonium-basedRTILslookthepromisingalternative:theyarerelativelyRoomtemperatureionicliquids(RTIL),whichareorganicorcheapandeasytosynthesize;someofthemarewater-immiscibleorganoelementsalts

7、liquidatroomtemperature,havenowadaysaandsuitableforsolventextraction.growingdiversityofapplicationsinchemistryandtechnology[1,2].Alargenumberofpublicationsdevotedtoliquid–liquidsep-Theadvantagesofroomtemperatureionicliquidsincludewideliq-arationswiththeuseofRTILshav