Thermodynamic and kinetic studies of palladium (II) extraction by extractant mixtures containing LIX 63 Part I. Thermodynamic study

被引：35

作者：

Foulon, C ^{[1
]}

Pareau, D ^{[1
]}

Durand, G ^{[1
]}

机构：

[1] Ecole Cent Paris, Lab Chim & Genie Proc, F-92295 Chatenay Malabry, France

来源：

HYDROMETALLURGY | 1999年 / 51卷 / 02期

关键词：

palladium; LIX; 63; extraction;

D O I：

10.1016/S0304-386X(98)00053-X

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Extraction of palladium (II) by LIX 63, TOPO, TIBPS, Aliquat 336 and HDEHP individually or in mixture with LIX 63, was studied in HCl (1 mol 1(-1)). It was found that the association of LIX 63 with TOPO or Aliquat 336 enhances the extraction rate of Pd(II). Aliquat 336 is the most powerful additive, the extraction thermodynamics were carefully investigated for this case. The comparison of the distribution curves, for individual extractants and their mixtures, indicated a significant synergism that was explained by the formation of a mixed species of Pd(II), LIX 63 (H(2)Ox) and Aliquat 336 (Ali): [PdCl3(H(2)Ox)](Ali), in addition to those formed with the individual extractants: [PdCl4](Ali)(2) and [PdCl2(H(2)Ox)(2)]; the formation constants of these three compounds were determined. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：139 / 153

页数：15

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