Sorbents based on calix[4]arenes for extraction of technetium(vii) from acidic and alkaline mediaстатья
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Дата последнего поиска статьи во внешних источниках: 20 декабря 2019 г.
Аннотация:Sorption of TcVII from solutions of various compositions with new sorbents prepared by the noncovalent immobilization of (thia)calix[4]arenes on the Amberlite XAD-7™ support was studied. The sorbents studied efficiently extract technetium(vii) from both acidic and alkaline media. The sorption capacity of the sorbent with thiacalix[4]arene groups is superior to that of the sorbents with calix[4]arene groups and several times higher than that of the sorbents previously proposed for the sorption of TcVII. Technetium(vii) is sorbed by this sorbent as 1: 1 and 1: 2 thiacalix[4]arene—NH4TcO4 and 1: 1 and 1: 2 thiacalix[4]arene—NaTcO4 complexes.