2014•Solvent Extraction and Ion ExchangeRequires access

New Diamides of 2,2′-dipyridyl-6,6′-dicarboxylic Acid for Actinide-Lanthanide Separation

M. Yu. Alyapyshev, В. А. Бабаин, Л. И. Ткаченко, Alena Paulenová, A. A. Popova, Nataliya E. Borisova

Abstract

The extraction of americium and lanthanides by diamides of 2,2′-dipyridyl-6,6′-dicarboxilic acid solutions in polar diluents was investigated. The dependence of extraction properties of the diamides on their structure was studied and the distribution ratios of americium and lanthanides from nitric acid solutions were determined. The highest extraction was found for the compounds with the ethyl-group and the alkyl-substituted aryl-group on the amidic nitrogen. The Am/Ln separation factors higher than 10 were achieved for extraction from high acidity media.

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Key concepts: Chemistry, Americium, Lanthanide, Nitric acid, Actinide, Extraction (chemistry), Diluent, Alkyl