Sorbents Based on Crown Ethers for Purification of Aqueous Solutions from Metal Ions
| Autor: | Leonid I. Trakhtenberg, M. I. Ikim, E. Yu. Spiridonova, V. F. Gromov, G. N. Gerasimov |
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| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Sorbent Aqueous solution 010304 chemical physics Chemistry Metal ions in aqueous solution Inorganic chemistry chemistry.chemical_element Sorption Ether 010402 general chemistry 01 natural sciences Copper 0104 chemical sciences Metal chemistry.chemical_compound visual_art 0103 physical sciences visual_art.visual_art_medium Physical and Theoretical Chemistry Crown ether |
| Zdroj: | Russian Journal of Physical Chemistry B. 14:1036-1041 |
| ISSN: | 1990-7923 1990-7931 |
| Popis: | The sorption of copper and lead ions by sorbents based on 15-crown-5 and 18-crown-6 esters and their benzosubstituted analogs chemically bonded to porous mineral substrates under the action of gamma radiation is considered. The influence of various parameters on the efficiency of metal sorption from aqueous solutions is studied. The correspondence between the ability of the sorbent to absorb metal ions and the size of the cavity of the crown ether (CE) is shown, which determines the high level of selectivity of such sorbents. Indeed, sorbents based on 18-crown-6 ether have a significantly higher sorption capacity in relation to lead, while 15-crown-5 ether is more effective for the sorption of copper ions. The effect of the radiation dose rate and the time of holding the sorbent in a salt solution on the amount of sorbed metal is studied. |
| Databáze: | OpenAIRE |
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