EXTRACTION KINETICS OF ZINC FROM AQUEOUS PERCHLORATE SOLUTION BY D2EHPA DISSOLVED IN ISOPAR-H

被引：36

作者：

APARICIO, J ^{[1
]}

MUHAMMED, M ^{[1
]}

机构：

[1] ROYAL INST TECHNOL,DEPT INORGAN CHEM,S-10044 STOCKHOLM 70,SWEDEN

来源：

HYDROMETALLURGY | 1989年 / 21卷 / 03期

关键词：

Hydrogen Ion Concentration--Effects - Hydrometallurgy - Phosphoric Acid - Zinc Metallurgy--Research;

D O I：

10.1016/0304-386X(89)90010-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The rate of extraction of zinc (II) from aqueous perchlorate solutions at 1 M ionic strength by di(2-ethylhexyl) phosphoric acid (DEHPA) in Isopar-H (ESSO chemicals) was studied. The study was performed using a modified Lewis cell at 25°C. The experimental hydrodynamic conditions were chosen so that the contribution from diffusion on the measured rate of reaction was minimized. The rate of zinc extraction was measured at different chemical composition by varying zinc, hydrogen ion and DEHPA concentrations. The data were analysed in terms of pseudo-first order constants and a reaction mechanism was developed where a zinc-DEHPA complex is formed at the interface. The results of this kinetic model are in agreement with the equilibrium study reported previously for the same system.

引用

页码：385 / 399

页数：15

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