异丙醇-磷酸氢二钾-水三元体系的溶解度和液液相平衡  

Solubility and Liquid-Liquid Phase Equilibrium of a Ternary System of Isopropyl Alcohol-Potassium Hydrogen Phosphate-Water

作　　者：谭平华 林金清 陈培钦 林其忠 

机构地区：[1]华侨大材料科学与工程学院,福建泉州362011

出　　处：《华侨大学学报（自然科学版）》2003年第2期179-183,共5页Journal of Huaqiao University(Natural Science)

基　　金：福建省自然科学基金资助项目 (E0 2 10 0 2 2 )

摘　　要：用浊点法测定在常压和 35℃下 ,异丙醇 -磷酸氢二钾 -水三元体系的平衡溶解度 ,及该体系的液液相平衡数据 .绘制相应的溶解度图和相图 ,结合回归溶解度经验方程 (R≥ 0 .999) ,并探讨这种双水相体系形成的条件和相平衡的初步规律 .实验结果表明 ,异丙醇 -磷酸氢二钾 -水能形成稳定的双水相体系 ,其成相的质量分数范围为磷酸氢二钾 (0～ 0 .72 86 )、水 (0～ 0 .6 814 )、异丙醇 (0～1.0 0 ) .该双水相体系有可用于物质的苯取。By applying turbidity analysis, the equilibrium solubility of a ternary system of isopropyl alcohol and potassium hydrogen phosphate and water as well as the data of liquid liquid equilibrium of that system are determined at 35 ℃ and atmospheric pressure. Corresponding solubility diagram and phase diagram are drawn, and empirical equation of solubility ( R ≥0.999) is regressed. Moreover, the condition under which this aqueous two phase system are formed and the tentative law of phase equilibrium are investigated. As shown by experimental results, the phase formation of a stable aqueous two phase system depends upon the mass fraction of isopropyl alcohol ranging 0～1.00, potassium hydrogen phosphate ranging 0～0.728 6, and water ranging 0～0.681 4. This aqueous two system can be used for extraction and separation and purification of substance.

关 键 词：异丙醇 磷酸氢二钾 水 三元体系 溶解度 液液相平衡 相图 双水相体系 浊度法 分离技术 

分 类 号：TQ028.4[化学工程] O642.42[理学—物理化学]