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Chinese Journal of Organic Chemistry >

0 250817

DOI: https://doi.org/10.6023/cjoc202504016

ARTICLE

A Strategy of Cyclic Extraction Coupled with Electrolysis for Green Synthesis of High-Concentration Hydroquinone

  • Xia Zehao ,
  • Zhang Xinsheng ,
  • Niu Dongfang
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  • School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237

Received date: 2025-04-15

  Revised date: 2025-06-12

  Online published: 2025-08-18

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Abstract

In this study, a cyclic extraction-coupled electrolysis strategy was developed for the green synthesis of high-concentration hydroquinone(HQ). p-Benzoquinone(BQ) was first generated via anodic oxidation of phenol, subsequently extracted by chlorobenzene, and finally reduced at the cathode. Under the optimized electrolytic parameters, the total yield of hydroquinone was 68.03%. Chlorobenzene, as the extractant, could balance the efficient separation of p-benzoquinone and the recyclability of the electrolyte. After the anode liquid was recycled 5 times, the yield of p-benzoquinone remained at about 73%, and after the cathode liquid was recycled 4 times, the concentration of hydroquinone increased by 4.6 times. It increased from 4.68 g/L to 21.51 g/L. This method ensures the recyclability of both anodic and cathodic electrolytes while achieving a high hydroquinone concentration, thereby offering an industrially feasible approach for the green synthesis of hydroquinone.

Key words： Electrochemical oxidation of phenol; High-concentration hydroquinone; Cyclic extraction; Electrolyte recycling.

Cite this article

Xia Zehao , Zhang Xinsheng , Niu Dongfang . A Strategy of Cyclic Extraction Coupled with Electrolysis for Green Synthesis of High-Concentration Hydroquinone[J]. Chinese Journal of Organic Chemistry, 0 : 250817 . DOI: 10.6023/cjoc202504016

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