萃取分离体系分子间弱相互作用的研究进展

萃取反应和传质大多发生在溶液相界面,而萃取体系的新相生成和相分离行为取决于溶液相内分子微观聚集结构的变化。研究萃取分离过程溶液相内及相界面发生的各种分子间弱相互作用及其随萃取反应条件的变化、加和与协同效应,是国际上萃取分离化学化工的前沿热点,对于深入认识萃取分离过程微观机理、调控分离选择性具有重要意义。本文从萃取分离体系的界面分子间相互作用出发,总结评述了国内外近年来利用各种实验手段表征液液萃取分离体系分子间弱相互作用的一些代表性工作和最新研究进展。

Research progress on intermolecular weak interaction in extraction and separation system

The extraction reaction and separation in most cases occur on liquid-liquid interface, and generally, the formation of a new phase and phase-separation kinetics in extraction systems depend on step-by-step evolution of molecular aggregates in solution microstructure. Therefore, the research on various intermolecular interaction appeared in solutions or on the interface of contacting liquid phases during extraction and separation process, and exploration about the influence from the change, interrelationship and synergistic effect of those intermolecular interactions are becoming one of the research focuses and frontier around the world in current separation sciences and chemical engineering. It is very important towards understanding the microscopic mechanism in the separation process, and also how to control the separation selectivity. In present paper, recent research progress and some typical works about the intermolecular interaction on the interfaces of liquid phases, and various experimental techniques and methods employed to describe the intermolecular weak interaction in extraction and separation systems are reviewed.