GREEN ELECTROCHEMICAL SYNTHESIS OF p-AMINOPHENOL AND INDUSTRIALIZATION

MA Chun’an; CHU Youqun; TONG Shaoping; MAO Xinbiao; LI Meichao; ZHU Yinghong

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GREEN ELECTROCHEMICAL SYNTHESIS OF p-AMINOPHENOL AND INDUSTRIALIZATION

更新时间：2025-12-10

- GREEN ELECTROCHEMICAL SYNTHESIS OF p-AMINOPHENOL AND INDUSTRIALIZATION
- CIESC Journal Issue 12, Pages: 1971-1975(2004)
- 作者机构：
  
  浙江工业大学应用化学系、绿色化学合成技术国家重点实验室培育基地,浙江,杭州,310032
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 December 2004，
  
  Published：25 December 2004
- 稿件说明：
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MA Chun’an, CHU Youqun, TONG Shaoping, et al. GREEN ELECTROCHEMICAL SYNTHESIS OF p-AMINOPHENOL AND INDUSTRIALIZATION[J]. CIESC Journal, 2004, (12): 1971-1975.
DOI：

MA Chun’an, CHU Youqun, TONG Shaoping, et al. GREEN ELECTROCHEMICAL SYNTHESIS OF p-AMINOPHENOL AND INDUSTRIALIZATION[J]. CIESC Journal, 2004, (12): 1971-1975. DOI：

摘要

研究了在阴极转动分隔式电解槽中硝基苯电化学还原制备对氨基苯酚（PAP）时阴极转速、反应温度等工艺参数对电解性能的影响，并考察了不同阳极材料的稳定性.实验结果表明，增大阴极转速和升高反应温度有利于反应的进行；自制的Pb-Sb-Sn-Ag-Cu五元合金作为阳极材料具有比Ti/Ir阳极更长的工作寿命.当以铅合金为阳极材料、体系温度为90℃、阴极转速为900 r8226;min-1、电解电流为3000 A时，硝基苯的平均转化率为99%，PAP平均收率为69.9%，电解直流电单耗为7.24 kW8226;h8226;(kg PAP)-1，产品纯度大于98%，熔点为186.1～187.3 ℃.

Abstract

The studies on the industrialization of electrochemical synthesis of p-aminophenol (PAP) from nitrobenzene in a divided electrolytic cell with a rotating Cu-Hg cathode were presented.The experimental results showed that the electrolytic properties are greatly depended on the operation parameters

such as cathode rotating speed

current

temperature

as well as anode materials.The reduction of nitrobenzene to PAP was favored by increasing temperature and cathode rotating speed.Compared with Ti/Ir anode

the Pb-Sb-Sn-Ag-Cu alloy was more suitable as anode material when the cost and operating life were concerned.Industrialization tests of electrochemical synthesis of PAP were conducted at the following conditions: Pb alloy anode material

temperature 90℃

cathode rotating speed 900 r8226;min-1

current 3000 A.The average current efficiency and conversion ratio of nitrobenzene were 57% and 99% respectively.The average yield of PAP was up to 69.9% and DC power consumption was 7.24 kW8226;h8226;(kg PAP)-1.The purity of the product was higher than 98%

and its average melting point was 186.1—187.3℃.

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