高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (12): 1410.

• 研究论文 • 上一篇    下一篇

萃取过程的量热研究(Ⅰ)——有机相中反向胶束的形成及对萃取的影响

沈兴海, 高宏成   

  1. 北京大学技术物理系, 100871
  • 收稿日期:1989-12-22 出版日期:1990-12-24 发布日期:1990-12-24
  • 通讯作者: 高宏成
  • 基金资助:

    国家自然科学基金

Investigation of Extraction Process by Titration Calorimetry(Ⅰ)——Formation of Reversed Micelle in Organic Phase and Its Effect on Extraction Process

Shen Xing-hai, Gao Hong-cheng   

  1. Department of Technical Physics, Peking University, Beijing, 100871
  • Received:1989-12-22 Online:1990-12-24 Published:1990-12-24

摘要: 用滴定量热法研究萃取有机相中反向胶束的形成,分别测定P204(钠)-仲辛醇-煤油体系和季铵盐-仲辛醇-煤油体系的临界胶束浓度、聚集数和胶束形成常数等,并讨论了胶束的形成对萃取分配比的影响。

关键词: 滴定量热法, 反向胶束, 溶剂萃取

Abstract: The formation of reversed micelle in extractants-organic phase was studied by titration calorimetry. Critical micellar concentration (CMC), aggregation number(n), formation constant (K) and thermodynamic function of the micellar formation △G, △H, △S were determined for system: D2EHPA(Na)-sec-octyl alcohol-kerosine and trialkylmethyl ammonium chloride-sec-octyl alcohol-kerosine. According to the above mentioned results, the effect of formation of micelle on the extraction coefficient and mechanism is discussed.

Key words: Titration calorimetry, Reversed micelle, Solvent extraction

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