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1、上海交通大学硕士学位论文Eu、Dy）的萃取，考察辐照剂量对萃取体系萃取性能的影响，通过核磁（NMR）、紫外（UV-vis）研究萃取体系辐射稳定性。研究表明：随着辐射剂量的增加，辐射后的isoBu-BTP/[C2mim][NTf2]体系相较于辐射前在低酸度下（0.01mol/L）对Y、Nd、Eu、Dy的萃取率基本不变。UV和NMR能谱显示经1000kGy剂量辐照后的isoBu-BTP仍没有变化，但UV图谱显示[C2mim][NTf2]有一定的辐解，而且辐照后的[C2mim][NTf2]在与水相接触后出现了沉淀并且颜
2、色加深。不过从总体上看，isoBu-BTP/[C2mim][NTf2]具有良好的耐辐射性。关键词：isoBu-BTP；离子液体；萃取；稀土元素；镝；γ辐射II万方数据上海交通大学硕士学位论文ExtractionofSeveralRare-EarthMetalIonsUsingisoBu-BTP/[C2mim][NTf2]SystemABSTRACTWiththetremendousdevelopmentofnuclearpower,howtodealwithspentfuelhasattractedlotsofa
3、ttention.However,oneoftheproblemsduringthespentfuelreprocessingistheseparationofMinorActinidefromHighLevelLiquidWaste,especiallytheseparationofAn(III)andLn(III),whichhavesimilarchemicalproperties.Incurrentresearches,thenewnitrogendonorligands--R-BTP(bis-triaz
4、ine-pyrdine)havebeensynthesizedandtestedastheextractingagentswithpotentialselectivityforactinides(III)overlanthanides(III).Itisthefirsttimethattheextractionbehaviorofrare-earthmetalsionsfromnitricacidsolutionwasstudiedbyusinganovelextractingsystembasedonR-BTP
5、andionicliquid.Weattempttoestablishanewsolventextractionsystemfortheseparationofminoractinideandlanthanide.Theextractionbehaviorofseveralrare-earthmetalions(Y(III),Nd(III),Eu(III),Dy(III))wasinvestigatedbyusinganovelextractingsystem,whichismadeupof2,6-bis(5,6
6、-dibutyl-1,2,4-triazin-3-yl)pyridine(isoBu-BTP)--actedasextractantwhichcanseparatelanthanidesandminoractinideseffectivelyinnitricacidsolution,and1-ethyl-3-methylimidazoliumbis(trifluoromethylsulfonyl)imide([C2mim][NTf2])--actedasanextractionmediumwhichshowsag
7、reatsolubilityagainstisoBu-BTP.WestudytheextractionbehaviorofDy(III)(simulatingactinide)andEu(III)(simulatinglanthanide)fromnitricacidsolutionbyusingtheR-BTP/ILsystem,tosimulateAn/Lnseparationinspentfuelrecycles.Thisresearchcouldbedividedinto3parts.PartA.Thei
8、nfluenceoftheconcentrationofnitricacid,theIII万方数据上海交通大学硕士学位论文concentrationofextractantandthestrippingconditionhavebeeninvestigatedindetail.IthasbeenprovedthattheisoBu-BTP/[C2mim][NTf2]ext
