Extraction of zirconium(IV) from hydrochloric acid solutions by tri-octylamine and neutral donors

被引：0
|
作者：
S. Biswas
S. Basu
机构：
[1] Burdwan University,Nuclear and Analytical Chemistry Laboratory, Department of Chemistry
来源：
Journal of Radioanalytical and Nuclear Chemistry | 1999年 / 242卷
关键词：
Zirconium; Adduct; Hydrochloric Acid; Organic Phase; Solvent Extraction;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Solvent extraction of Zr(IV) from aqueous HCl solutions by mixtures of TOA and different organophosphorous bases in carbontetrachloride solvent have been found to be always higher than that by any single extractant. Synergism has been observed in the range of 2.4–9.6M HCl. Although the species extracted with neutral donor alone seems to be ZrCl4·TOPO etc, with a mixture of extractants, however, the extracted species appears to be Q2ZrCl6·TOPO where Q is R3NH. The extraction has also been found to increase with increase in the concentration of amines and neutral donors. Enhancement of extraction has been explained by the formation of a complex adduct in organic phase. Synergistic coefficients and apparent formation constants of the complex adducts have also been calculated.
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页码：253 / 258
页数：5
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