Abstract
Dependencies for the sorption of palladium(II), gold(III), and platinum(IV) chloro complexes from individual and binary solutions with sorbents based on sulfoethylated polyallylamine and poly(aminostyrene) have been obtained. It has been found that predominant sorption mechanism is complexation with functional groups of the sorbents for gold(III) and palladium(II) and ion exchange for platinum(IV). It has been shown that increase in the sulfoethylation degree of aminopolymer matrix leads to decrease of platinum(IV) sorption and therefore, to increase in palladium(II) sorption selectivity relative to this ion. This effect is the largest for the sorbents based on polyallylamine. The conditions of quantitative desorption of the studied metals from sorbent surface have been determined. The sorption of gold(III) by the sorbent based on polyallylamine has been shown to be complicated by gold(III) reduction in sorbent phase.
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This work was supported by the Russian Foundation for Basic Research (project no. 19-33-90081) and the Government of the Russian Federation (Decree No. 21, Contract no. 02.A03.21.0006).
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Alifkhanova, L.M., Lopunova, K.Y., Marchuk, A.A. et al. Features of Sorption Preconcentration of Noble Metal Ions with Sulfoethylated Amino Polymers. Russ. J. Inorg. Chem. 66, 909–915 (2021). https://doi.org/10.1134/S0036023621060024
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DOI: https://doi.org/10.1134/S0036023621060024