THE EXTRACTION OF CERIUM(III) AND LANTHANUM(III) WITH KELEX-100 FROM CHLORIDE SOLUTIONS

被引：11

作者：

URBANSKI, TS ^{[1
]}

ABBRUZZESE, C ^{[1
]}

FORNARI, P ^{[1
]}

MASSIDDA, R ^{[1
]}

机构：

[1] CNR,INST MINERAL PROC,I-00138 ROME,ITALY

来源：

HYDROMETALLURGY | 1990年 / 25卷 / 02期

关键词：

D O I：

10.1016/0304-386X(90)90038-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A study has been made of the extraction equilibrium of cerium (III) and lanthanum (III) in NaCl solutions with 7-(4-ethyl-l-methyloctyl)-8-hydroxyquinoline (Kelex 100)*1 in n-heptane with the addition of 10% v v n-decanol. It has been found that this equilibrium depends on pH as well as on extractant, metal and chloride concentrations. The extraction constants calculated from the experimental results are log Kex = -16.3 and log Kex = -19.4 for cerium and lanthanum, respectively. Separation of these metals using Kelex 100 is promising, as the Ce/La separation factor values are not less than 200. Simple complexes such as CeR3 or LaR3 seem to be extracted. © 1990.

引用

页码：185 / 195

页数：11

共 25 条

[21] SOLVENT-EXTRACTION OF GALLIUM(III) FROM SODIUM-HYDROXIDE SOLUTION BY ALKYLATED HYDROXYQUINOLINE [J].