Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (10): 1937-1940.doi: 10.3866/PKU.WHXB20081035

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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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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