高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (6): 817.

• 研究论文 • 上一篇    下一篇

气液色谱法研究正构醇的自缔合

周效贤, 王毅琳, 李松林, 郑国康   

  1. 兰州大学化学系, 兰州 730000
  • 收稿日期:1992-05-27 修回日期:1992-09-25 出版日期:1993-06-24 发布日期:1993-06-24
  • 通讯作者: 郑国康

Studies on Self-Association of n-AlcohoIs by Gas-Liquid Chromatography

ZHOU Xiao-Xian, WANG Yi-Lin, LI Song-Lin, ZHENG Guo-Kang   

  1. Department of Chemistry, Lanzhou Untversity, Lanzhou, 730000
  • Received:1992-05-27 Revised:1992-09-25 Online:1993-06-24 Published:1993-06-24

PDF (PC)

被引次数

2

摘要： 用气液色谱有限浓度法测量了313.15K下C1—C4各正构醇在角鲨烷中的活度系数。用连续缔合的Wiehe-Bagley型和Kretschmer-Wiebe型结合物理作用项的双参数模型对实验数据进行处理,得到各醇的自缔合常数和物理相互作用参数。

关键词: 气液色谱, 有限浓度活度系数, 醇, 自缔合

Abstract: The finite concentration activity coefficients of n-alcohols (C1-C4) were measured in squalane at 313.15 Kby using gas-liquid chromatography.The data were treated with Kretschmer-Wiebe and Wiehe-Bagley two-parameter association model, respectively.The self-association equilibrium constants KAand the physical interaction parameters β were evaluated.It is found that the solute activity coefficients for ail systems decrease in the following order:methanol>ethanol>n-propanor> n-butanol.There exists a similar order for the constants KAand β.Both the studied two-parameter models can be fitted to the experimental results satisfactorily.

Key words: Gas-liquid chromatography, Finite concentration activity coefficient, Alcohols, Self-asso- ciation

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