非水溶液盐效应的气液色谱研究: C~1~-~4醇-盐(NaI、NaSCN、NaClO~4)-碳酸丙烯酯体系

本文利用气液色谱法测定了333.15K时, C~1~-~4醇在碳酸丙烯酯-盐(NaI、NaSCN、NaClO~4)固定液中的无限稀释活度系数γ^∞~1。观察到: 1. 各溶质的Inγ^∞~1和固定液中盐的摩尔分数间具有较好的线性关系, 且发生盐溶效应。2. 在各个盐浓度的溶液中, 醇同系物的Inγ^∞~1和醇分子碳数间存在着线性关系, 并对实验现象从理论上进行了分析和讨论。

A study on the salt effect in nonaqueous solution by gas liquid chromatography--For C~1~-~4 alcohols in solutions of propylene carbonate and salt (NaI, NaSCN, NaClO~4)

The gas liquid chromatog. method was used to detect the infinite activity coefficients of C1-4 alcs. in solns. of propylene carbonate (PC) and salt (NaI, NaSCN, NaClO4). The coefficient of salting-in effect was calculated Experimental result shown: (1) there was a linear relationship between 1n g1?of alcs. with salt concentration in stationary solns., and the salting-in effect exists; (2) in various salt concentration solution, another linear relationship between 1n g1?of normal alcs. with its carbon no. also exist. The experimental results are discussed in the view of solute-solvent interaction.