Solvent extraction of gold (III) by the chloride salt of the tertiary amine Hostarex A327.: Estimation of the interaction coefficient between AuCl-4 and H+

被引：39

作者：

Martínez, S ^{[1
]}

Sastre, AM ^{[1
]}

Alguacil, FJ ^{[1
]}

机构：

[1] CSIC, Ctr Nacl Invest Met, E-28040 Madrid, Spain

来源：

HYDROMETALLURGY | 1999年 / 52卷 / 01期

关键词：

gold; Hostarex A237; AuCl4-; H+;

D O I：

10.1016/S0304-386X(99)00014-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The equilibrium distribution of gold (III) between hydrochloric acid and the chloride salt of the amine Hostarex A327 in n-decane was studied. The extraction reaction is exothemic (Delta H degrees = -22.9 kJ/mol). Gold (III) is extracted by the reaction: R3NH+Clorg- + AuCl4 beta q- reversible arrow R3NH+AuCl4org- + Cl-aq(-) The extraction equilibrium constant depends on the ionic strength. From this dependency it was estimated that the interaction coefficient (AuCl4-,H+) is 0.26. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：63 / 70

页数：8

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