氨基酸在甲醇—水混合溶剂中的气液平衡

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。

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

The isothermal vapor liquid equilibrium data of glycine, DL-alanine and L-valine in methanol-water mixed solvents at 333 K and 338 K have been measured with the improved Rose still. A linear 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.