A RAPID METHOD TO DETERMINE DIFFUSION COEFFICIENTS OF COUNTER-IONS IN AN ION-EXCHANGE MEMBRANE  

作　　者：徐铜文 何炳林 

出　　处：《Chinese Journal of Chemical Engineering》1997年第1期85-90,共6页中国化学工程学报（英文版）

基　　金：Supported by a grant from Chinese Pastdoctoral Foundation

摘　　要：1 INTRODUCTIONRapid and precise methods to obtain the diffusion coefficients of counter-ions are im-portant for the characterization of ion exchange membranes.Many theoreticaldescriptions of ion transport in ion exchange membranes have been developed by usingthe principles of irreversible thermodynamics,or the Nernst-Planck equations.Fick’s law can also be used for the description of the transport of ions with equaldiffusivity.However,for counter-ions of different diffusivities,Nerst-Planck

关 键 词：ion-exchange MEMBRANE diffusion COEFFICIENT Donnan DIALYSIS NERNST-PLANCK EQUATION 

分 类 号：TQ028[化学工程]