INDIRECT ELECTROCHEMICAL PROCESSES AT A ROTATING-DISK ELECTRODE - CATALYTIC ALKALINE CYANIDE OXIDATION

被引：16

作者：

HOFSETH, CS

CHAPMAN, TW

机构：

[1] Department of Chemical Engineering, University of Wisconsin, Madison

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1992年 / 139卷 / 09期

关键词：

D O I：

10.1149/1.2221257

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Rotating-disk-electrode polarization curves for the oxidation of cyanide on a copper oxide film at moderately alkaline pH have been fit by a reaction-plane model of the fast homogeneous reaction between cyanogen and hydroxide. The results indicate that when the ratio of bulk hydroxide concentration to that of bulk cyanide is low, the main electrode reaction product is cyanogen. This cyanogen is transported away from the electrode until it encounters hydroxide and reacts very quickly to form cyanate and cyanide. Electrode kinetic parameters for the heterogeneous cyanogen formation reaction on the copper oxide film have been estimated.

引用

页码：2525 / 2529

页数：5

共 17 条

[1] ANODIC-OXIDATION OF POTASSIUM CYANIDE ON GRAPHITE ELECTRODE [J].