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Sorbents based on calix[4]arenes for extraction of technetium(vii) from acidic and alkaline media |
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| Authors: | Popova N N Morgalyuk V P Tananaev I G Solovieva S E Popova E V Antipin I S |
| Institution: | 1.A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, building 4, 31 Leninsky prosp., 119991, Moscow, Russian Federation ;2.A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991, Moscow, Russian Federation ;3.A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center of the Russian Academy of Sciences, 8 ul. Arbuzova, 420088, Kazan, Russian Federation ; |
| Abstract: | Sorption of TcVII from solutions of various compositions with new sorbents prepared by the noncovalent immobilization of (thia)calix4]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 thiacalix4]arene groups is superior to that of the sorbents with calix4]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 thiacalix4]arene—NH4TcO4 and 1: 1 and 1: 2 thiacalix4]arene—NaTcO4 complexes. |
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