Carbonate extraction-based refining of Uranium. Separation of U(VI), Ce(IV) and Ln(III) from aqueous carbonate solutions with Methyltrioctylammonium Carbonateстатья
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Дата последнего поиска статьи во внешних источниках: 16 ноября 2017 г.
Аннотация:The extraction of U(VI), Ce(IV), La(III), Nd(III), Sm(III), and Y(III) from an aqueous solution
of Na2CO3 (0.25 mol/L) resulting from oxidative dissolution of U(IV) in the presence of H2O2 into a solution of methyltrioctylammonium (MTOА) carbonate (0.25 mol/L) in toluene. It was found that U(VI)/Ln(III) values vary from ~8 to 3290 as the O : W ratio changes from 2 : 1 to 10 : 1, while U(VI)/Ce(IV) varies from ~1.5 to 10, which allows for the extraction separation of U(VI) from Ce(IV) in a 8- to 10-stage counter-current extraction cascade and from Ln(III) in 2- to 3-stage cascade under the same conditions.