水在萃取体系等复杂流体中的结构及其作用机理

In this project, a series of reversed micelles and water-in-oil (w/o) microemulsions were prepared by mixing saponified naphthenic acid or organophosphorours acids with water. The aggregation states and microstructures of the microemulsions were investigated with FT-IR, 1H-NMR, FT-Raman, etc. The interactions between different types of surfactant and water were found to be a.combination of hydrogen-bonding, hydration effect and ion-association. By carrying.out this research project, we also studied the microstructure in extracted organic phase in the process of solvent extraction of gold with quaternary ammonium salt, and.suggested a possible extraction mechanism. This project also promoted the development of FT-IR spectroscopy study by proposing a new Raman enhanced mechanism as well as modifying the accessory part for cryogenic spectroscopy.

水不仅是生命过程和多种分散体系中最常见的连续介质，而且是重要的功能性物质，水在各种复杂流体中的微观结构、聚集状态及与周围环境的相互作用决定体系的性质和功能。本课题拟研究萃取体系等复杂流体中水的存在状态，水分子与表面活性剂、有机溶剂、金属离子的氢键缔合、水化作用，及萃取过程中水结构的转变和界面迁移效应。通过形成微乳制备超浓溶液，研究金属离子的水化过程，阐明特殊环境中水的结构与作用。