FILM DIFFUSION IN IMPREGNATING NAFION MEMBRANE WITH PLATINOUS SOLUTION

段天平; 王建华; 夏代宽; 刘期崇

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FILM DIFFUSION IN IMPREGNATING NAFION MEMBRANE WITH PLATINOUS SOLUTION

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- FILM DIFFUSION IN IMPREGNATING NAFION MEMBRANE WITH PLATINOUS SOLUTION
- CIESC Journal Issue 2, (1999)
- 作者机构：
  
  四川大学化工系,四川大学化工系,四川大学化工系,四川大学化工系成都 610065,成都 610065,成都 610065,成都,610065
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q021.4
- Online First：25 April 1999，
  
  Published：25 April 1999
- 稿件说明：
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段天平, 王建华, 夏代宽, et al. FILM DIFFUSION IN IMPREGNATING NAFION MEMBRANE WITH PLATINOUS SOLUTION[J]. CIESC Journal, 1999, (2).
DOI：

段天平, 王建华, 夏代宽, et al. FILM DIFFUSION IN IMPREGNATING NAFION MEMBRANE WITH PLATINOUS SOLUTION[J]. CIESC Journal, 1999, (2). DOI：

摘要

以Nemst-Planck方程为基础

对铂盐溶液浸渍Nation膜过程建立了非稳态的外扩散过程数学模型

采用预测-校正方法对模型求解

经Powell法搜索寻优

获得了液膜扩散系数及液膜厚度

计算值与实测值吻合较好。

Abstract

A mathematical model was proposed for a non - steady state film diffusion in impregnating Nafion membrane with dilute platinous solution. Because of the different characteristics of Pt( NH3)42+ and Na+ ions

the diffusion flux is affected by concentration difference and diffusion electric field. The model was solved with a algorithm of predictor - corrector method. Impregnating experiments were carried out to verify the model. The diffusion coefficients of Pt(NH3)42+ and Na+ ions and film thicknesses were determined. Numerical results agreed satisfactorily with experimental data.

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