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化学学报
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化学学报 ›› 1991, Vol. 49 ›› Issue (7): 656-659. 上一篇    下一篇

研究论文

萃取过程的量热研究 II: 微乳状液形成的滴水量热曲线

沈兴海;高宏成   

  1. 北京大学技术物理学系
  • 发布日期:1991-07-15

Investigation of extraction process by titration calorimetry II. Study on formation process of microemulsion by thermogram of titration of water

SHEN XINGHAI;GAO HONGCHENG   

  • Published:1991-07-15

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采用滴定量热法研究P204钠(钾、铵)-仲辛醇-煤油等体系在滴加水过程中的热量变化, 得到两种不同类型的量热曲线, 在此基础上解释了微乳状液的形成过程和水以两种状态─缔合水和自由水存在, 还以简化的模型定性地讨论了滴水过程中微乳状液颗粒大小的变化。

关键词: 铵化合物, 水, 钠, 钾, 辛醇 P, 萃取体系, 煤油, 环烷酸, 磷酸二(乙基己基)酯, 油水界面

Using the extractants such as naphthenic acid-sec-octyl alcohole and P204-sec-octyl alcohol- proved the formation of a W/O microemulsion in the saponified extractant. In this paper, the authors studied the above-mentioned systems by titration calorimetry. From titration thermogram, the existence of two states of water, bound water and free water, were demonstrated. According to a sketch of the suggested structure of the microemulsion, the size parameters of the microemulsion have been evaluated.

Key words: AMMONIUM COMPOUND, WATER, SODIUM, POTASSIUM, OCTANOL P, EXTRACTION SYSTEM, KEROSENE, NAPHTHENIC ACIDE, DI(ETHYLHEXYL) PHOSPHORIC ACID, OIL-WATER INTERFACE

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