Na~+-UO_2~(2+)二元离子交换体系中树脂体积发生变化时的动力学
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摘要: 提出了Na ̄+-UO ̄(2+)_2二元离子交换体系中树脂体积发生变化时的动边界模型数学表达式;探讨了不同实验条件下Na ̄+-UO ̄(2+)_2离子交换反应机理,计算了扩散系数。结果表明,用此模型处理该体系的交换反应动力学是成功的。Abstract: THE KINETICS OF BINARY SYSTEM WITH CHANGING RESIN VOLUME DURING ION EXCHANGESONG YINJIE;YANG QINGDONG;ZHAOAIMIN(Department of Modern Physics,Lanzhou University,Lanzhou 730000)ABSTRACT A mathematical model the moving boundary mechanism with changimn exchanger volumeduring ion exchange in binary system of is presented.The kinetic data observed on001×7 strong acidic cation exchange resin are treated by the model,the mechanism of ion ex-change reaction and under various experimental conditions is discussed,and the diffusion coefficients are calculated.The conformitv of this model with experimental re-sults is demonstrated.Key words Binary system Moving boundary model Resin volume Diffusion coeffi-Cient
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[1] 1GopalaRaoM,GuptaAK.IonExchangeProcessesAccompaniedbyIonicReactions.ChemEngJ,1982,24:18l-190.2SchmucklerG,NativM,GoldsteinS.KineticsofShellProgressiveReactionsinIonExchangeResins,In:TheTheoryandPracticeofIonExchange,Cambridge,1976.25-30.3BischoffKB.TheDeterminationofDiffusionCoefficientinMoving-BoundaryMedel.ChemEngSci,1963,18:711-718.4TaoZuyi,NiuJinlong.ShellProgressiveModelWithChangingBulkConcentrationandIonExchangeVol-ume,SolventExtIonExch,1990,8:99-115.5宋胤杰,赵爱民.用三种模型处理二元离子交换动力学的对比研究.核化学与放射化学,1994,16(3):151-159.6ZhaoAimin,TaoZuyi,TongWengong,etal.StudiesonIonExchangeEquilibriaandKineticsⅡ.CationExchangeKinetics.JRadioanalNuclChem,Articles,1987,116(1):49-61.7陶祖贻,赵爱民.离子交换平衡及动力学,北京:原子能出版社,1989.21-24.8赵爱民,宋胤杰.三元离子交换动力学的研究.核化学与放射化学,1994,16(4):205-212.9TaoZuyi,ZhaoAimin,TongWengong,etal.StudiesonIonExchangeEquilibriaandKineticsI.Na ̄+-H ̄+CationExchangeEquilibriumandKinetics.JRadioanalNuclChem,Articles,1987,116(1):35-47.
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