高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (11): 1374.

• 论文 • 上一篇    下一篇

碳纤维微电极研究(Ⅺ)——利用温度效应测定电极反应的热力学和动力学参数

鞠熀先, 陈洪渊, 高鸿   

  1. 南京大学化学系, 南京大学化学系, 南京, 210008, 南京210008
  • 收稿日期:1991-11-19 修回日期:1992-06-20 出版日期:1992-11-24 发布日期:1992-11-24
  • 通讯作者: 陈洪渊
  • 基金资助:

    国家自然科学基金

Investigation on Carbon Fiber Microelectrode(Ⅺ)——The Determination of the Thermodynamic and Kinetic Parameters by the Temperature Effect

JU Huang-Xian, CHEN Hong-Yuan, GAO Hong(H. Kao)   

  1. Department of Chemistry, Nanjing University, Nanjing, 210008
  • Received:1991-11-19 Revised:1992-06-20 Online:1992-11-24 Published:1992-11-24

摘要: 研究了温度对碳纤维微电极上伏安曲线的影响及温度与电极电位的关系,测定了电极反应的热力学参数.由电流与温度的关系测定了去极剂的扩散活化能Eal和Do,利用微电极具有高速传质的特性,测定了常规电极上为可逆反应的电极反应标准速率常数k",并通过k"与温度的关系测定了电极反应的活化能.

关键词: 碳纤维微电极, 温度效应, 热力学常数, 动力学参数, 二茂铁及其衍生物

Abstract: The effects of temperature on the electrochemical behaviour of ferrocene and its derivative at a carbon fiber microelectrode were studied.By means of the noble feature of micro-electrode,and the temperature effect on currents,electrode potentials as well as heterogeneous electron transfer rate constant,a number of thermodynamic and kinetic parameters,such as Eal,D0,k",ΔS",ΔG",ΔH",Q′H and K,were determined.

Key words: Carbon fiber microelectrode, Temperature effect, Thermodynamic constant, Kinetic Parameter, Ferrocene and its derivative

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