应用化学 ›› 1988, Vol. 0 ›› Issue (1): 82-84.

• 研究简报 • 上一篇    下一篇

Li2SO4-C2H5OH-H2O体系从-20℃到+50℃的平衡溶解度

夏树屏, 潘焕泉, 高世扬   

  1. 中国科学院盐湖研究所, 西宁
  • 收稿日期:1987-03-04 修回日期:1987-06-01 出版日期:1988-02-10 发布日期:1988-02-10
  • 基金资助:
    中国科学院基金资助项目

THE SOLUBILITY OF TERNARY SYSTEM Li2SO4-C2H5OH-H2O AT-20℃+50℃

Xia Shuping, Pan Huanqian, Gao Shiyang   

  1. Institute of Salt Lake, Academia Sinica, Xining
  • Received:1987-03-04 Revised:1987-06-01 Published:1988-02-10 Online:1988-02-10

摘要: 将某些有机组份引入盐水溶液进行盐类分离提取和脱水等方面的应用,正在受到人们的重视.Hull和Owens报导,将二噁烷加在KI和KIO3溶液中可使后者沉出,而KI仍留于溶液.Alfassi和Feldman用丙酮成功地进行了KBrO3与KBr的分离,还将碳酸钾加于乙醇水溶液中得到几乎是纯的乙醇.这一分离技术的基础是含盐双液系的溶度及其相的关系.

关键词: 相平衡, 溶解度, 三元体系, 硫酸锂, 乙醇

Abstract: In this paper, the solubility of ternary system Li2SO4-C2H5OH-H2O has been determined at -20℃, 0℃, 30℃ and 50℃ respectively; It has been found that the equilibrium solid phase in the range of studied concentration and temperature is Li2SO4·H2O, which decreases its solubility in water with increase of temperature, but dissolves a little in ethanol. The isothermal solubility data have been correlated by experimental formulae.

Key words: Phase equilibrium, Solublity, Ternary system, Lithium sulfate, Ethanol