氧化单在各种有机溶剂中的溶解度和抗溶剂结晶
Lien Lemmens1, Xavi Vanwezer1, Stijn Raiguel1
1KU Leuven, Department of Chemistry, Celestijnenlaan 200F, Box 2404, B-3001 Leuven, Belgium. Koen.Binnemans@kuleuven.be.
Physical chemistry chemical physics : PCCP
|February 24, 2026
概括
对氧化单 (LiOH·H2O) 结晶的有机抗溶剂的研究显示,2-醇是最有前途的. 其有利的溶解性,安全性和成本使其成为工业应用的理想选择.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 结晶技术 结晶技术的使用
背景情况:
- 氧化单 (LiOH·H2O) 在各种工业应用中至关重要.
- 需要有效的结晶方法来获得高纯度的LiOH·H2O.
- 了解三元相图是优化结晶过程的关键.
研究的目的:
- 系统地确定LiOH·H2O在水有机抗溶剂系统中的可溶性.
- 为了研究LiOH·H2O从水溶液中的抗溶剂结晶.
- 根据多个标准,确定最适合用于LiOH·H2O结晶的抗溶剂.
主要方法:
- 在九个三元系统 (LiOH·H2O - 水 - 反溶剂) 中测量溶解度.
- 抗溶剂结晶的实验.
- 使用X射线衍射 (XRD) 和热重力测量分析 (TGA) 的表征.
- 用1H NMR对系统进行溶剂分解的分析.
主要成果:
- OH·H2O在甲醇和乙醇中具有高溶解度,在2-醇,1,4-二氧化和1,2-二次氧化中具有低溶解度.
- 甲基 (THF),乙二和1-醇诱导的液相分离.
- 乙导致溶剂分解 (阿尔多尔凝结).
- 通过XRD和TGA证实了所有测试的抗溶剂的LiOH·H2O结晶.
结论:
- 2-醇被确定为LiOH·H2O结晶的最佳抗溶剂.
- 选择标准包括有利的溶解性,环境和健康状况,安全性和成本效益.
- 该研究为设计高效的LiOH·H2O分离工艺提供了必要的数据.
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