HALIDE CATALYSIS OF THE ELECTROCHEMICAL OXIDATION OF GOLD IN ACETONITRILE

被引：11
作者：
KISSNER, R
机构：
[1] Laboratorium für Anorganische Chemie, ETH Zürich
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1995年 / 385卷 / 01期
关键词：
ELECTROOXIDATION; PASSIVATION;
D O I：
10.1016/0022-0728(95)03781-B
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The anodic oxidation of metallic gold in acetonitrile, which is normally inhibited by traces of water causing passivation, can be promoted by halide catalysis. The deblocking mechanism is based on displacement of water by concurrent adsorption of halide ions. Only small quantities of halide, enough to cover the anode surface with a monoionic layer, are required for the process. The catalytic effect increases in the order Cl- < Br- << I-. The effect can be used for the easy preparation of Au+ solutions.
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页码：71 / 75
页数：5
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