Electro-catalytic synthesis of diglycolic acid on active nickel-oxide electrode in alkaline medium

ZHAO Fengming; LI Shanshan; ZHU Yinghong; MA Chun’an

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Electro-catalytic synthesis of diglycolic acid on active nickel-oxide electrode in alkaline medium

更新时间：2025-12-10

- Electro-catalytic synthesis of diglycolic acid on active nickel-oxide electrode in alkaline medium
- CIESC Journal Issue S1, Pages: 88-92(2008)
- 作者机构：
  
  浙江工业大学应用化学系
- 作者简介：
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- Online First：30 June 2008，
  
  Published：30 June 2008
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ZHAO Fengming, LI Shanshan, ZHU Yinghong, et al. Electro-catalytic synthesis of diglycolic acid on active nickel-oxide electrode in alkaline medium[J]. CIESC Journal, 2008, (S1): 88-92.
DOI：

ZHAO Fengming, LI Shanshan, ZHU Yinghong, et al. Electro-catalytic synthesis of diglycolic acid on active nickel-oxide electrode in alkaline medium[J]. CIESC Journal, 2008, (S1): 88-92. DOI：

摘要

通过电化学氧化还原技术将镍电极进行活化制备活性氧化镍电极，结合AFM、循环伏安和恒电流电解等技术研究了二甘醇在NaOH溶液中电催化氧化合成二甘醇酸。结果表明，经活化后的镍电极对二甘醇具有较高的电催化活性，镍电极经15 min活化处理后的电催化活性最佳。获得的最佳电解工艺条件为：电流密度17 mA·cm-2，电解反应温度60℃，二甘醇浓度0.3 mol·L-1，NaOH浓度2 mol·L-1，此时二甘醇酸的收率为66.7％，电流效率为66.1％，二甘醇的转化率达89％。

Abstract

Active nickel-oxide electrodes prepared by electrochemical oxidation-reduction exhibited electro-catalytic activity for the oxidation of diethylene glycol to diglycolic acid in alkaline mediumAtomic force microscopy （AFM），cyclic voltammetry and galvanostatic electrolysis were used to study the surface characterization of active nickel-oxidation electrode and electrochemical performance toward oxidation of diethylene glycolThe results show that nickel-oxide hydroxide layer formed at the surface of electrode behaves as an efficient electro-catalyst for the oxidation of diethylene glycol to diglycolic acid in alkaline mediumThe effects of various parameters such as time of activation，current density，diethylene glycol concentration and medium temperature on the electro-oxidation of diethylene glycol were investigated Depending upon the experimental conditions，the yield of dilycolic acid was 66.7% with the current efficiency of 66.1% and conversion efficiency of 89%

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