物理化学学报 >> 1991, Vol. 7 >> Issue (02): 152-157.doi: 10.3866/PKU.WHXB19910205

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液/液界面新溶剂体系的电化学研究

俞泽穆; 赵宇光; 汪尔康   

  1. 中国科学院长春应用化学研究所电分析化学开放研究实验室，长春 130022
  • 收稿日期:1989-12-25 修回日期:1990-04-14 发布日期:1991-04-15
  • 通讯作者: 汪尔康

Electrochemical Investigation of Liquid/Liquid Systems Using Various Organic Solvents

Yu Ze-Mu; Zhao Yu-Guang; Wang Er-Kang   

  1. Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1989-12-25 Revised:1990-04-14 Published:1991-04-15
  • Contact: Wang Er-Kang

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摘要： 用循环伏安法测定了离子在水-异硫氰酸烯丙脂(AIT)体系中的标准转移Gibbs能△_o~w G_(tr,i)~0。对含有AIT的混合溶剂的研究, 发现了一系列电位窗比较宽的水/有机溶剂体系, 讨论了溶剂效应对△_o~w G_(tr,i)~0的影响。

关键词: 循环伏安法, 水异硫氰酸烯丙酯(AIT), 标准转移吉布斯能, 溶剂效应

Abstract: The potential windows of the system water/pure solvent (W/P) and water/solvent mixtures(W/S) have been investigated by cyclic voltammetry with solvents whose dielectric constants lie between 5.67 and 34.82. In the presence of LiCl in the aqueous phase and tetrabutytammoniumtetraphenylborate(TBATPB) in the organic phase, the systems water/allyl iso-thiocyanate (W/AIT) and water/nitrobenzene (W/NB) show a same wide potential window. Thermodynamic parameters of ion transfer across W/AIT interface were determined. In systems of W/P and W/S the influence solvent effect on the standard Gibbs energies of transfer of ion Δ_o~wG_(tr,i)~p was discussed.

Key words: Cyclic Voltammetry, Allyl iso-thiocyanate, Standard Gibbs energies of transfer, Solvent effects