物理化学学报 >> 2008, Vol. 24 >> Issue (10): 1937-1940.doi: 10.3866/PKU.WHXB20081035

研究简报 上一篇    

对硝基苯酚在酸性介质中的电化学还原反应机理

李美超; 吴海峰; 胡佳琦; 马淳安   

  1. 浙江工业大学分析测试中心, 杭州 310032; 浙江工业大学化学工程与材料学院, 绿色化学合成技术国家重点实验室培育基地, 杭州 310032
  • 收稿日期:2008-01-02 修回日期:2008-04-25 发布日期:2008-10-08
  • 通讯作者: 李美超 E-mail:limc@zjut.edu.cn

Electroreduction Mechanismof p-Nitrophenol in Sulfuric Acid

LI Mei-Chao; WU Hai-Feng; HU Jia-Qi; MA Chun-An   

  1. Research Center of Analysis and Measurement, Hangzhou 310032, P. R. China; State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310032, P. R. China
  • Received:2008-01-02 Revised:2008-04-25 Published:2008-10-08
  • Contact: LI Mei-Chao E-mail:limc@zjut.edu.cn

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摘要： 采用电化学原位红外光谱技术研究了对硝基苯酚在铜电极表面及硫酸介质中的电化学反应机理. 对硝基苯酚首先经电还原反应生成对亚硝基苯酚和对羟胺苯酚, 对亚硝基苯酚可发生缔合生成反式二聚体, 最后在较低的电位下, 对羟胺苯酚经电还原生成了对氨基苯酚.

关键词: 对硝基苯酚, 原位红外光谱, 电还原, 硫酸

Abstract: The electrochemical reduction of p-nitrophenol in sulfuric acid on copper electrode was investigated by in situ FTIR technique. Electroreduction of p-nitrophenol in sulfuric acid led to the formation of p-nitrosophenol first, which could be converted to trans-dimer of p-nitrosophenol, and then p-hydroxylamino phenol. Finally p-hydroxylamino phenol was reduced to p-aminophenol at low potential.

Key words: p-Nitrophenol, In situ FTIR, Electroreduction, Sulfuric acid