Influence of the Nature of the Diluent on the Extraction of Eu(III), Am(III), and Cm(III) with N,N,Nꞌ,Nꞌ-Tetrabutyldiglycolamide from Nitric Acid Solutionsстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 30 января 2024 г.
Аннотация:The extraction of nitric acid, trace amounts of 152Eu(III), 241Am(III), and 244Cm(III) with N,N,N’,Nꞌ-tetrabutyldiglycolamide is studied in four diluents: mixture of n-dodecane with decanol-1 (volume ratio 90 : 10), benzene, carbon tetrachloride, and m-trifluoromethylnitrobenzene. For all diluents studied, the distribution coefficients of metals increase with an increase in the HNO3 concentration in the equilibrium aqueous phase. The degree of metal extraction into the extract increases in the order: Cm(III) < Am(III) < Eu(III) and decreases in the order of diluents: F-3 > DD+Dec-1 > CCl4 > PhH. The conditions for the separation of Eu(III)/Am(III) and Am(III)/Cm(III) pairs are determined. The thermal effects of extraction reactions increase on going from An(III) to Eu(III) for all the diluents considered.