Preparation of P-mSA/mCS bipolar membrane and its application in electrosynthesis of 2,3,5,6-tetrachlopyridine

XIAO Yanchun; CHEN Riyao; ZHENG Xi; CHEN Xiao; CHEN Zhen

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Preparation of P-mSA/mCS bipolar membrane and its application in electrosynthesis of 2,3,5,6-tetrachlopyridine

更新时间：2025-12-10

- Preparation of P-mSA/mCS bipolar membrane and its application in electrosynthesis of 2,3,5,6-tetrachlopyridine
- CIESC Journal Issue 2, Pages: 525-530(2010)
- 作者机构：
  
  福建师范大学化学与材料学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 February 2010，
  
  Published：05 February 2010
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XIAO Yanchun, CHEN Riyao, ZHENG Xi, et al. Preparation of P-mSA/mCS bipolar membrane and its application in electrosynthesis of 2,3,5,6-tetrachlopyridine[J]. CIESC Journal, 2010, (2): 525-530.
DOI：

XIAO Yanchun, CHEN Riyao, ZHENG Xi, et al. Preparation of P-mSA/mCS bipolar membrane and its application in electrosynthesis of 2,3,5,6-tetrachlopyridine[J]. CIESC Journal, 2010, (2): 525-530. DOI：

摘要

以五氧化二磷、磷酸三乙酯和磷酸为反应剂

制备了磷酸化海藻酸钠(P-SA)

经二茂铁离子改性后作为阳膜层;用乙酰基二茂铁改性壳聚糖制备了阴膜溶胶(mCS)。将阴膜溶胶流延于阳膜层上，制备了P-二茂铁-SA/乙酰基二茂铁-CS双极膜（P-mSA/mCS BPM）。测定了双极膜的电荷密度、H+渗透性、交流阻抗、Ⅳ曲线和SEM。以化学镀方法将金属锌和镍的合金镀在阳离子交换膜层的表面上，以实现阴极室中的零极距电解。实验结果表明，以五氯吡啶（PCP）为原料，经电催化还原脱氯制备2

6-四氯吡啶（2

6-TCP），电流密度30 mA·cm-2、电解时间40 min，电流效率70.1%、产率96%。与传统的Zn还原法相比，不仅省去了昂贵的金属还原剂的消耗，而且消除了锌泥对环境的污染。

Abstract

Phosphorylated sodium alginate (P-SA) membrane was synthesized from phosphorus pentaoxide

triethyl phosphate and phosphoric acid

and then modified by ferrocene as a linking reagent. Chitosan(CS) was modified by acetylferrocene. P-ferrocene-SA/acetylferrocene-CS bipolar membrane was prepared with a paste method

and was named as P-mSA/mCS BPM. The bipolar membrane was characterized by charge density

H+ permeability

impedance

I-V curves and SEM. Zinc/nickel layer was plated down to the surface of cation exchange layer to realize zero polar distance electrolysis in the cathode room. The experimental results showed that 2

6-tetrachlopyridine (2

6-TCP[BFQ]) was electrocatalytically synthesized at the bipolar membrane by degradation of pentachloropyridine.The current efficiency was 70.1%

yield of 2

6-TCP was 96%

when the current density was 30 mA·cm-2. Compared with the traditional Zn reduction method

the electro-reduction technology saved the zinc powder and eliminated the pollution to the environment.

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