间硝基苯甲酸在硫酸介质中的电还原特性

Electrochemical reduction of m-nitrobenzoic acid in sulfuric acid

采用循环伏安法研究了硫酸介质中电极材料、扫描速度、反应温度和添加剂等对间硝基苯甲酸(mNBA)电解还原的影响。结果表明:在该体系中最合适的阴极材料为铜电极;在电还原过程中,随着扫描速度和温度增大,mNBA电还原反应的峰电流不断增大,其电极过程受扩散控制,电还原反应伴有不可逆随后化学反应;在溶液中加入无机盐SnCl2对mNBA的电解还原有明显的助催化作用。

The influences of electrode material, scan rate, reaction temperature and additive on the electrochemical reduction of m-nitrobenzoic acid （mNBA） in sulfuric acid were investigated with cyclic voltammetry. The results showed that the most suitable electrode material was copper. The peak current of mNBA reduction increased with increasing scan rate and temperature. The electrode process was controlled by diffusion, and was accompanied by irreversible chemical reaction. The additive SnCl2 showed good electro-catalytic activity for the electrochemical reduction of mNBA.