固体PbCl2的阴极还原机理
来源期刊:中南大学学报(自然科学版)1981年第1期
论文作者:曾庆衡 黄振谦
文章页码:32 - 39
关键词:阴极还原机理; 固体化合物; 直接还原; 控制步骤; 固相; 动力学方程式; 还原速度; 液相; 动力学规律; 电极表面
摘 要:本文通过测量固体PbCl2、Pb(NO3)2、Pb(AC)2及AgCl阴极还原的I—φ曲线,确定了它们的还原动力学规律:从电极表面液相层的扩散控制步骤,转入固体化合物表面液相层的扩散控制步骤,最后进入固相阴极直接还原,文中同时提出了固相化合物阴极直接还原的机理,并从理论上导出其动力学方程式。
Abstract: This paper describes the measurements of the cathode-reduction I urves of solid PbCl2,Pb(NO3)2,Pb(Cl)2 and AgCl,thus determining theirkinetic behaviour during reduction:the diffusion-controlled step was foundto ransfer from the liquid-phase surface of the electrode to that of thesolid compound,and finally turn into direct lectrode olid-phase reduction.The paper also proposes the mechanism of electrode solid-phase reductionand derives a heoretical kinetic equation.