硝基甲苯异构体在芳羧酸酯液晶溶液中热力学性质的色谱法研究

首都医科大学学报 ›› 1992, Vol. 13 ›› Issue (4): 247-251.

硝基甲苯异构体在芳羧酸酯液晶溶液中热力学性质的色谱法研究

张玉珍¹, 管振喜²

1. 首都医学院化学教研室;2. 中国军事医学科学院

收稿日期:1991-07-10 修回日期:1900-01-01 出版日期:1992-10-15 发布日期:1992-10-15

A Chromatographical Study on Thermodynamic Quantities of Solution of Disubstituted Benzene Isomers in Liquid Crystals

Zhang Yuzhen¹, Guan Zhenxi²

1. Department of Chemistry, Capital Institute of Medicine;2. Academy of Military Medical Science

Received:1991-07-10 Revised:1900-01-01 Online:1992-10-15 Published:1992-10-15

摘要/Abstract

摘要： 应用气液色谱法测定了硝基甲苯异构体在液晶MPBOB[双-(对辛氧基苯甲酸)邻甲基对苯二酚酯]和MPBH₂B[双-(对已氧基苯甲酸)邻甲基对苯二酚酯]溶剂中,无限稀释条件下的活度系数。通过热力学量溶解焓、溶解熵、超额溶解焓和超额溶解熵的计算,对溶剂液晶的分离选择性进行了热力学的解释和说明。

关键词: 气液色谱, 液晶固定液, 活度系数, 溶液热力学

Abstract: Infinite dilution activity coefficients of nitrotoluene isomers in the liquid crystal solvents MPBOB and MPBH_xB were determined with gas-liquid chromatography method.From these coofficients, enthalpy of solution and entropy of solution, excess enthalpy and excess entropy were calculated, Finaly, the selectivity of the liquid crystal solvents were interpreted in terms of the thermodynamic resules.

Key words: GLC, liquid crystal, activity coefficients, thermodynamic of solution

中图分类号:

O625.611

张玉珍;管振喜. 硝基甲苯异构体在芳羧酸酯液晶溶液中热力学性质的色谱法研究[J]. 首都医科大学学报, 1992, 13(4): 247-251.

Zhang Yuzhen;Guan Zhenxi. A Chromatographical Study on Thermodynamic Quantities of Solution of Disubstituted Benzene Isomers in Liquid Crystals[J]. Journal of Capital Medical University, 1992, 13(4): 247-251.