通过胆化物/甘油溶剂提取化合物的提取机制:DFT和分子动力学研究研究
Lan Yi1, Jinwen Wang1, Jixing Liu1
1Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China. lan@wust.edu.cn.
胆化物和甘油 (ChCl/GLY) 混合物有效地从煤焦油中提取化合物. 这种深层的溶解剂促进了由于有利的溶解自由能量的自发转移,增强了提取的理解.
科学领域:
- 物理化学 物理化学
- 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.
背景情况:
- 煤焦油含有有价值的化合物,但它们的提取具有挑战性.
- 深度浸泡溶剂 (DES) 为溶剂应用提供了一个有前途的替代品.
- 胆和甘油 (ChCl/GLY) 是一种潜在的DES用于化合物提取.
研究的目的:
- 从理论上研究使用ChCl/GLY从煤焦油中提取烯酸化合物的机制.
- 分析ChCl/GLY-化合物系统的热力学,相互作用和动态性质.
- 了解ChCl/GLY对化合物振动谱的影响.
主要方法:
- 密度函数理论 (DFT) 的计算.
- 分子动力学 (MD) 模拟.分子动力学 (MD) 模拟.
- 分析溶解自由能量,相互作用能量,扩散系数和振动光谱.
主要成果:
- 化合物在ChCl/GLY中比煤焦油中表现出更多负的溶解自由能量,导致自发提取.
- 静电和分散相互作用是显著的,相互作用能量在-46和-53kJmol-1.1之间.
- Cl/GLY降低了扩散系数和键寿命,离子形成了化合物周围的第一个溶解.
结论:
- Cl/GLY是一种有效的溶剂,用于从煤焦油中提取化合物.
- 由于溶解效应,提取在热力学上是有利的.
- 这项研究提供了对DES介导的提取机制的基本见解.
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