Impregnated resins containing di(2-ethylhexyl) thiophosphoric acid for the extraction of palladium(II). I. Preparation and study of the retention and distribution of the extractant on the resin.

被引：28

作者：

Rovira, M ^{[1
]}

Hurtado, L ^{[1
]}

Cortina, JL ^{[1
]}

Arnaldos, J ^{[1
]}

Sastre, AM ^{[1
]}

机构：

[1] Univ Politecn Cataluna, ETSEIB, Dept Chem Engn, E-08028 Barcelona, Spain

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 1998年 / 16卷 / 02期

关键词：

D O I：

10.1080/07366299808934539

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solvent impregnated resins containing di-(2-ethylhexyl) thiophosphoric acid(DEHTPA) were prepared by direct adsorption of the extractant onto Amberlite XAD2 using a dry impregnation method. The impregnated resins were characterized by means of potentiometric titrations and specific surface area measurements, and a new method to determine DEHTPA content in the resin based on surface area measurements, is proposed. The distribution of DEHTPA between the aqueous phase and the resin phase was studied, and the data obtained have been treated by the program LETAGROP-DISTR in order to determine the distribution constant K(D), the dimerization constant K(2) and the acidity constant K(a).

引用

页码：545 / 564

页数：20

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