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化学学报
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化学学报 ›› 1992, Vol. 50 ›› Issue (2): 169-174. 上一篇    下一篇

研究论文

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

白同春;卢锦梭;王键吉;刘文彬;郭钧杰;赵春霞   

  1. 河南师范大学化学系
  • 发布日期:1992-02-15

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)

BAI TUNGCHUN;LU JINSUO;WANG JIANJI;LIU WENBIN;GUO JUNJIE;ZHAO CHUNXIA   

  • Published:1992-02-15

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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。

关键词: 气液色谱, 醇, 盐效应, 碳酸丙烯酯, 盐溶, 活度系数, 溶剂-溶质相互作用

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.

Key words: GAS LIQUID CHROMATOGRAPHY, ALCOHOL, SALT EFFECT, PROPENE CARBONATE, SALINOUS DISSOLUTION, ACTIVITY COEFFICIENT

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