硫酸体系中Ce^(3+)在铂电极上的阳极氧化动力学研究  

The Kinetics of Anodic Oxidation of Ce(Ⅲ)ion on Pt Electrode in Sulfuric Acid Solution

作　　者：徐建兵[1] 唐新军[2] 

机构地区：[1]湖南化工研究院国家农药创制工程技术研究中心,湖南长沙410007 [2]湖南化工职业技术学院,湖南株洲412004

出　　处：《精细化工中间体》2007年第4期36-38,66,共4页Fine Chemical Intermediates

摘　　要：进行了硫酸溶液中Ce4+/Ce3+电对的电极过程的动力学研究,测定了电化学反应的反应级数,以及不同电势下的表观活化能,探讨了残留的有机物对Ce3+在铂电极上的阳极氧化的影响,并推导出反应为电化学和扩散共同控制步骤的准可逆反应。The reaction kinetics of anodic oxidation of Ce^4＋/Ce^3＋ on platinum electrode in sulfuric acid solution was investigated. The reaction order and the apparent activation energy in different potential were measured. The effect of organic residues on the anodic oxidation of Ce^3＋ was discussed.The results of experiments show that the electrode reaction is controlled by mixing process of diffusion and charge-tranfer, and the electrochemical reaction of Ce^4＋/Ce^3 ＋ on platinum electrode is quasi reversible.

关 键 词：铂电极 CE^3+ 阳极氧化 电化学动力 

分 类 号：TQ150[化学工程—电化学工业]