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Updated: Jul 17, 2025

Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
估计含有热不稳定的物质的高温系统的非理想性
Ahmad Alhadid1, Christian Jandl2, Sahar Nasrallah1
1Biothermodynamics, TUM School of Life Sciences, Technical University of Munich, Freising, Germany.
本研究提出了一种新的方法,通过分析共晶形成来确定热不稳定的化合物的活性系数. 这种方法可以准确地建模这种系统的固体液体平衡 (SLE) 阶段图.
科学领域:
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 优学系统的设计依赖于理解固体液体平衡 (SLE).
- 准确的SLE建模需要元件融特性和液相活动系数.
- 热不稳定的物质由于没有可用的融特性而带来了挑战,阻碍了SLE相位图建模.
研究的目的:
- 评估热不稳定的化合物的液相活性系数,而不依赖于它们的化性能.
- 为了建模含有热不稳定的物质的eutectic系统的SLE相图.
- 为了研究eutectic系统的液体溶液中的相互作用.
主要方法:
- 对同晶体的固体液体平衡 (SLE) 数据进行关联,以计算活动系数.
- 使用差分扫描热度计 (DSC) 和粉末X射线衍射 (PXRD) 来获得SLE相图.
- 在活动系数计算中使用非随机的两流体方程 (NRTL).
主要成果:
- 成功获得了三种eutectic系统的SLE相图:四甲基化/catechol,四甲基化/catechol和贝他因/catechol.
- 在这些系统中确定了九种新型共晶体的形成.
- 计算的活性系数显示出与理想相差的显著负偏差,表明强键存在.
结论:
- 开发了一种方法来确定活动系数,并为具有热不稳定的组件的系统建模SLE相位图.
- 在研究的液体溶液中证实了强烈的分子间相互作用,特别是键.
- 突出模拟离子-离子相互作用的重要性,以便在离子欧特克系统中的非理想性.
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