非水混合溶剂体系的盐效应

采用改进的Rose釜测定了在101.33kPa下, 甲醇-二氧六环-NaSCN, 甲醇-二氧六环-NaI和甲醇-四氢呋喃-LiCl, 甲醇-四氢呋喃-CuCl2体系的汽液平衡数据。实验结果和热力学基本原理确证了体系的沸点与加入盐浓度间的线性关系, 计算了各双液组成下体系的盐效应常数, 分析了实验中产生"异常"现象的原因, 探讨了溶液内部粒子相互作用的规律, 通过用相律、盐效应理论、静电理论、溶剂化理论的解释, 得到了一些具有理论价值的结论。

Salt effect in nonaqueous mixed solvent systems

Vapor - liquid equilibrium data of methanol -1,4- dioxane - NaSCN, methanol -1,4 -dioxane-NaI and methanol-tetrahydrofuran - LiCl, and methanol- tetrahydrofuran-CuCl2 systems were measured with modified Rose still at 101. 33kPa. The linear relationship between boiling temperature and salt concentration was verified by the experimental results and thermodynamical theory. The salt effect parameters at each binary composition were calculated. We analysed the reasons of "abnormal phenomena"observed in the experiment and probed into the interactions between the particles in solutions. Some important conclusions were obtained by the aid of the phase rule,salt effect theory, electrostatic theory and solvation model.