高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (6): 970.

• 研究简报 • 上一篇    下一篇

铈(Ⅳ)与RE(Ⅲ)的中空纤维膜基萃取分离

王玉洁, 张淑敏, 李德谦   

  1. 中国科学院长春应用化学研究所稀土化学与物理开放实验室, 长春, 130023
  • 收稿日期:1997-05-05 出版日期:1998-06-24 发布日期:1998-06-24
  • 通讯作者: 李德谦
  • 作者简介:王玉洁,男,38岁,博±,副教授.
  • 基金资助:

    国家攀登计划稀土基础研究资助

Separation of Ce(Ⅳ) and RE(Ⅲ) with Hollow Fiber Membrane based Extraction

WANG Yu-Jie, ZHANG Shu-Min, LI De-Qian   

  1. Laboratory of Rare Earth Chemistry and Physics, Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022
  • Received:1997-05-05 Online:1998-06-24 Published:1998-06-24

PDF (PC)

被引次数

18

关键词: 中空纤维, 萃取, 稀土分离, N1923

Abstract: Separation of Ce(Ⅳ) and RE(Ⅲ) was investigated by hollow fiber membrane based extraction with contercurrent recirculating operation. The mass transfer coefficients of Ce(Ⅳ) and RE(Ⅲ) and the effective factors to them were tested. The results show the mass transfer coefficient of Ce(Ⅳ) is larger than that of RE(Ⅲ), and their mass transfer mechanism is different. The mass transfer of Ce(Ⅳ) was controlled by the resistance in water critical layer due to its more rapid interfacial reaction rate and larger distribution coefficient, which was different from RE(Ⅲ) mass transfer with a slow interfacial reaction rate and small distribution coefficient. Ce(Ⅳ) was separated from the mixed solution of Ce(Ⅳ) and RE(Ⅲ) by means of the difference of their mass transfer rates.

Key words: Hollow fiber, Extraction, Rare earth separation, N1923

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