CIESC Journal

• 化工学报 • 上一篇    下一篇

不加支持电解质条件下传递现象的电化学测试方法研究

王德耕,连春光,朱士亮   

  1. 郑州工学院化工系,郑州工学院化工系,郑州工学院化工系 郑州450002 ,郑州450002 ,郑州450002
  • 出版日期:1992-12-25 发布日期:1992-12-25

ELECTROCHEMICAL MEASUREMENT OF TRANSPORT PARAMETER UNDER THE EFFECT OF ION MIGRATION

Wang Degeng, Lian Chunguang and Zhu Shiliang (Department of Chemical Engineering, Zhengzhou Institute of Technology, ZhengZhou 450002)   

  • Online:1992-12-25 Published:1992-12-25

摘要: 传递现象电化学测试方法在传质、传热及流场参数测试中有广泛的应用’‘-“。传统方法 在测试溶液中加有大量支持电解质以消除电迁移影响,使传质过程仅为扩散控制,电极反应 极限电流直接对应于扩散传质系数。支持电解质通常为盐或碱类,由于溶液的腐蚀性及操作 间歇期,盐或碱在测试电极表面的结晶,给测试过程带来了一定的危害。本文旨在探讨和建 立不加支持电解质条件下传递现象的电化学测试方法。

Abstract: Theoretical analysis of the determination of local transfer coefficients and liquid velocity in a liquid flow system by an electrochemical method without using the supporting electrolyte is conducted and some quantitative relationships are given. The results have been verified by experiments in aqueous solution of K3Fe(CN)6 and K4Fe(CN)6 at a flow rate of 0.3-1.7m/s in a tube of 20mm internal diameter.