Metal extraction by N,N′-dialkyl-N,N′-diaryl-dipicolinamides from nitric acid solutions

被引：71

作者：

Babain, V. A. ^{[1
]}

Alyapyshev, M. Yu. ^{[1
]}

Kiseleva, R. N. ^{[1
]}

机构：

[1] VG Khlopin Radium Inst, St Petersburg 197022, Russia

来源：

RADIOCHIMICA ACTA | 2007年 / 95卷 / 04期

关键词：

dialkyl-diarylamides of 2,6-pyridine-dicarboxylic (dipicolinic) acid extraction; americium; uranium; europium; polar solvents;

D O I：

10.1524/ract.2007.95.4.217

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A study of americium, uranium and europium extraction by various dialkyl-diarylamides of 2,6-pyridine-dicarboxylic (dipicolinic) acid has shown that maximum extractability is achieved by using polar fluorine-substituted diluents. Generally, the diamide extractability is found to increase with the alkyl radical length. We have demonstrated the possibility to separate Am and Eu in solutions with a nitric acid concentration of 0.5-2 mol/1. The extractability of these diamides with respect to the three metals rises with the acid concentration increase to 6 mol/1.

引用

页码：217 / 223

页数：7

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