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

Abstract

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

CLC Number:

O614

Cite this article

ZHOU YAXIAN;ZHANG XIANXIN. Study on extraction of indium (III) by benzo-15-crown-5 and dibenzo-18-crown-6[J]. Acta Chimica Sinica, 1988, 46(5): 496-499.

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苯并-15-冠-5和二苯并-18-冠-6萃取分离铟(III)的研究