LIQUID-LIQUID-EXTRACTION OF RHENIUM(VII) FROM HYDROCHLORIC-ACID SOLUTIONS BY NEUTRAL ORGANOPHOSPHORUS COMPOUNDS AND HIGH-MOLECULAR-WEIGHT AMINES

被引：45

作者：

SATO, T

SATO, K

机构：

[1] QUEENS UNIV,DEPT MET ENGN,KINGSTON K7L 3N6,ONTARIO,CANADA

[2] SHIZUOKA UNIV,FAC ENGN,DEPT APPL CHEM,HAMAMATSU,SHIZUOKA 432,JAPAN

来源：

HYDROMETALLURGY | 1990年 / 25卷 / 03期

关键词：

D O I：

10.1016/0304-386X(90)90044-3

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The extraction of rhenium (VII) from hydrochloric acid solutions has been investigated using two neutral organophosphorus compounds - tributyl phosphate (TBP) and trioctyl phosphine oxide (TOPO) - and two high molecular weight amines - trioctylamine (TOA) and trioctylmethylammonium chloride (TOMAC). As a result, it was found that the extraction equilibria for TBP, TOPO, TOA and TOMAC can be expressed as follows: ReO3CIorg + nSorg ⇋ ReO3Cl nSorg where n=4 and 2 for S = TBP and TOPO, respectively; HReO4 aq + R3NHClorg ⇋R3NH2ReO4Clorg for TOA; and ReO4 aq- + R3R′NClorg ⇋ R3R′NReO4org + Cl-aq for TOMAC. In these extraction systems, the rhenium (VII) extraction efficiency follows the order TOA > TOMAC > TOPO > TBP at low aqueous acidity and TOMAC > TOA > TOPO > TBP at higher acidity. © 1990.

引用

页码：281 / 291

页数：11

共 18 条

[1] THE EXTRACTION OF NITRATES BY TRI-NORMAL-BUTYL PHOSPHATE (TBP) [J].