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Preparation of Binary and Ternary Deep Eutectic Systems
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紧绳上的深度环氧溶剂:平衡混合的和
Adriaan van den Bruinhorst1, Chiara Corsini1, Guillaume Depraetère1
1Ionic Liquids Group, Laboratoire de Chimie de l'École Normale Supérieure de Lyon, Centre Nationale de Recherche Scientifique, and Université de Lyon, 69364 Lyon, France. adriaan.van-den-bruinhorst@ens-lyon.fr.
Faraday discussions
|July 26, 2024
概括
由于有利的吉布斯能量,深溶性溶剂 (DES) 呈现出很大的点陷. 这项研究揭示了,虽然一些DESs是度主导的,但其他则是度主导的,独立于键.
科学领域:
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
背景情况:
- 已知深溶性溶剂 (DES) 具有显著的点陷.
- 这些属性与理想混合行为的负偏差有关,通过过多的吉布斯能量来量化.
- 混合过多的和之间的平衡控制了这些偏差.
研究的目的:
- 实验性地确定基布斯过量的能量贡献 (和) 对于基于胆化物 (ChCl) 的DESs.
- 调查分子间结在这些DES混合行为中的作用.
- 了解控制DESs点陷的因素.
主要方法:
- 热量计用于实验性地确定三种基于ChCl的DES的混合过多的和.
- 用可极化力场的分子动力学模拟来研究分子间相互作用.
- 研究的DES是化胆与水 (H2O),乙烯基醇 (EG) 和1,3-二醇.
主要成果:
- 发现H2O + ChCl的过多的吉布斯能量是以度主导的.
- 乙烯基醇 + ChCl 和 1,3-propanediol + ChCl 的过多的吉布斯能量是以为主.
- 分子动力学模拟证实了H2O + ChCl和EG + ChCl中的分子间键,但这与度主导性无关.
结论:
- 在DES中物种间的结不一定会导致热主导的点陷.
- -平衡对于理解DES属性至关重要.
- 未来的研究应该通过改变DES成分的化学性质来调整这种平衡.
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