电化学氧化苯酚合成对苯醌的研究

doi:10.61558/2993-074X.2139

电化学（中英文） ›› 2013, Vol. 19 ›› Issue (5): 477-481. doi: 10.61558/2993-074X.2139

• 环境电化学近期研究专辑（吉林大学林海波教授主编） • 上一篇下一篇

电化学氧化苯酚合成对苯醌的研究

钮东方,俞程凯,张新胜^*

华东理工大学化学工程联合国家重点实验室,上海 200237

收稿日期:2012-12-25 修回日期:2013-01-09 出版日期:2013-10-28 发布日期:2013-01-09
通讯作者: 张新胜 E-mail:xszhang@ecust.edu.cn

Preparation of Benzoquinone from Phenol by Electrooxidation

NIU Dong-fang, YU Cheng-kai, ZHANG Xin-sheng^*

State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2012-12-25 Revised:2013-01-09 Published:2013-10-28 Online:2013-01-09
Contact: ZHANG Xin-sheng E-mail:xszhang@ecust.edu.cn

摘要/Abstract

摘要： 在H型阳离子交换膜电解槽中，以H₂SO₄电解质、阳极和阴极铅电极，研究苯酚电解氧化合成对苯醌. 讨论电流密度、电解质浓度、电解液中对苯醌浓度和萃取剂等电解条件对对苯醌收率和电流效率的影响. 经优选工艺条件为：电流密度4 A·dm^-2，H₂SO₄电解质浓度1 mol·L^-1，氯仿萃取剂. 通入3.2 Ah电量，对苯醌收率可达68%，电流效率为24.7%. 而在萃取剂存在下，对苯醌收率可提高至73%，电流效率为26%. 实验结果表明氯仿萃取剂可循环套用.

关键词: 苯酚, 对苯醌, 电解氧化, 萃取剂

Abstract: The benzoquinone was prepared from phenol by electrooxidation in an H-type cell with cation exchange membrane, in which lead plates were used both as an anode and a cathode, while H₂SO₄ was used as a supporting electrolyte. The effects of current density, concentration of sulphuric acid, concentrations of benzoquinone in electrolyte and extractant on the yields and efficiencies of electrolysis were investigated. Under the optimized conditions of current density being 4 A·dm^-2, concentration of sulphuric acid 1 mol·L^-1, passed charge 3.2 A·h, the yield and current efficiency of benzoquinone could reach 68% and 24.7%, respectively, without using chloroform as an extractant. However, the yield and current efficiency of benzoquinone could be increased to 73% and 26%, respectively, in the presence of chloroform extractant which could be recycled in the preparation of benzoquinone.

Key words: phenol, beznoquinone, electrochemical oxidation, extractant

中图分类号:

O646

钮东方, 俞程凯, 张新胜. 电化学氧化苯酚合成对苯醌的研究[J]. 电化学（中英文）, 2013, 19(5): 477-481.

NIU Dong-fang, YU Cheng-kai, ZHANG Xin-sheng. Preparation of Benzoquinone from Phenol by Electrooxidation[J]. Journal of Electrochemistry, 2013, 19(5): 477-481.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.61558/2993-074X.2139

https://electrochem.xmu.edu.cn/CN/Y2013/V19/I5/477

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电化学氧化苯酚合成对苯醌的研究

Preparation of Benzoquinone from Phenol by Electrooxidation

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