高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (11): 1578.

• 研究论文 • 上一篇    下一篇

氨基酸在甲醇-水混合溶剂中的气液平衡

刘文彬, 王彩兰, 王键吉, 卢锦梭   

  1. 河南师范大学化学系, 新乡 453002
  • 收稿日期:1993-01-08 修回日期:1993-06-01 出版日期:1993-11-24 发布日期:1993-11-24
  • 通讯作者: 刘文彬, 男, 31岁, 硕士, 讲师
  • 作者简介:刘文彬, 男, 31岁, 硕士, 讲师
  • 基金资助:

    国家自然科学基金

Vapor Liquid Equilibrium of Amino Acids in Methanol-Water Mixed Solvents

LIU Wen-Bin, WANG Cai-Lan, WANG Jian-Ji, LU Jin-Suo   

  1. Department of Chemistry, Henan Normal University, Xinxiang, 453002
  • Received:1993-01-08 Revised:1993-06-01 Online:1993-11-24 Published:1993-11-24

摘要: 采用改进的Rose釜测定了在333K和338K下,氨基乙酸、DL-氨基丙酸及L-氨基异戊酸在甲醇-水混合溶剂中的气液平衡数据.实验结果表明,当甲醇-水混合溶剂的相对组成固定时,体系的平衡压力与加入的氨基酸的浓度间存在线性关系,使已建立的含盐混合溶剂的“广义线性定理"进一步扩展到含有非挥发性物质的混合溶剂中.用热力学原理导出了线性方程的数学解析式,讨论了引入氨基酸对混合溶剂结构及性质的影响规律.

关键词: 氨基酸, 线性关系, 混合溶剂, 相互作用

Abstract: The isothermal vapor liquid equilibrium data of glycine, DL-alanine and L-valine in methanol-water mixed solvents at 333 Kand 338 Khave been measured with the improved Rose still.Alinear relationship was found between the pressure and the concentration of amino acids when the binary relative composition is fixed.The extensive linear theory for the salted solution which has been established was further extended to the systems containing the non-volatile components.The linear formula has been obtained from the law of the thermodynamics.The influence laws of amino acids on the structure and property of the mixed solvent have been investigated.

Key words: Amino acids, Linear relationship, Mixed solvent, Interaction

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