Acta Chimica Sinica ›› 1988, Vol. 46 ›› Issue (5): 496-499. Previous Articles     Next Articles

Original Articles

苯并-15-冠-5和二苯并-18-冠-6萃取分离铟(III)的研究

周雅仙;张宪新   

  1. 郑州大学化学系
  • 出版日期:1988-05-15 发布日期:1988-05-15

Study on extraction of indium (III) by benzo-15-crown-5 and dibenzo-18-crown-6

ZHOU YAXIAN;ZHANG XIANXIN   

  • Online:1988-05-15 Published:1988-05-15

The percentage extration of In(III) by 1,2-dichloroethane can be increased greatly by the addition of benzo-15-crown-5 or dibenzo-18-crown-6 in presence of NaBr, KBr, or KI. The concentration conditional extration equilibrium constants K'ex decrease in the order K'ex[K(B-15-C-5)m'InI4] > K'ex[K(B-15-C-5)mInBr4] > K'ex[K(DB-18-C-6)InBr4] > K'ex[Na(B-15-C-5)InBr4] > K'ex[Na(DB-18-C-6)InBr4] (m' = 1.8, m = 1.5). Characteristics of the extractable species and crown ether crystalline complexes corresponding to the extracted complexes are used to explain these results. The effect of other ions in these extration systems indicate selective extration of In(III).

Key words: INDIUM, CROWN ETHER COMPOUNDS, EXTRACTION, BENZENE P, EXTRACTION EQUILIBRIUM

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