Preparation of high-pure choline

WANG Wei; ZHANG Xinsheng

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Preparation of high-pure choline

更新时间：2025-12-10

- Preparation of high-pure choline
- CIESC Journal Issue S1, Pages: 105-109(2008)
- 作者机构：
  
  化学工程联合国家重点实验室（华东理工大学）
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：30 June 2008，
  
  Published：30 June 2008
- 稿件说明：
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WANG Wei, ZHANG Xinsheng. Preparation of high-pure choline[J]. CIESC Journal, 2008, (S1): 105-109.
DOI：

WANG Wei, ZHANG Xinsheng. Preparation of high-pure choline[J]. CIESC Journal, 2008, (S1): 105-109. DOI：

摘要

研究了WU64-H型阳离子交换树脂对氯化胆碱中金属离子的去除情况，考查了不同转型剂、料液初浓度及流速对离子交换过程的影响。实验结果表明，在常温条件下，用电子级四甲基氢氧化铵溶液对树脂进行转型，料液初始浓度为2 mol8226;L-1，流速为5倍床层体积每小时时，提纯效果最好，提纯后氯化胆碱中金属离子的含量均达到要求。在此条件下，对提纯后的氯化胆碱进行电解，电流密度为1000 A8226;m-2，电解温度为50 ℃，电解结束后，产品胆碱中金属离子的含量均在100 μg8226;L-1以下，达到工业上高纯胆碱的纯度要求。

Abstract

Choline chloride is one of the raw materials to produce high-pure cholineThe choline chloride solution contains many kinds of metal ions such as Na+

K+

Mg2+

Ca2+ and so onMetal ion has a bad influence on the quality of high-pure cholineWU64-H resin was used to eliminate the metal ions in choline chlorideThe effects of transformation agent

flow rate and concentration were investigatedExperimental result indicated that

the electron-grade tetramethylammonium hydroxide was the best transformation agent

the best flow rate was 5 times as bed volume rate in an hour and the optimal concentration was 2 mol·L-1Under these optimal conditions

the concentrations of metal ions were significantly decreasedCholine was prepared by electrolysisThe current density was 1000 A·m-2 and the temperature was 50℃After electrolysis

the contents of metal ions were below 100 μg·L-1

and came up to the requirements.

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