Abstract
The adsorption of anionic complexes of erbium with Trilon B on D-403 anionite is studied at ionic strengths of 1 and 2 mol/kg (NaNO3) and temperatures of 298 and 343 K. The values of the stability constants of complex ions of REE with Trilon B and the Gibbs energies of complexation are calculated. The values of the Gibbs energy and the enthalpy and entropy of ion exchange are determined. Using the obtained thermo-dynamic and sorption characteristics, the possible separation of anionic complexes of erbium and cerium with Trilon B is demonstrated via frontal ion-exchange chromatography. A series of sorption capacities of anionic complexes of cerium, yttrium, and erbium is presented using the values of the Gibbs energy of ion exchange.
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Original Russian Text © O.V. Cheremisina, M.A. Ponomareva, V.N. Sagdiev, 2016, published in Zhurnal Fizicheskoi Khimii, 2016, Vol. 90, No. 3, pp. 443–450.
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Cheremisina, O.V., Ponomareva, M.A. & Sagdiev, V.N. Thermodynamic characteristics of sorption extraction and chromatographic separation of anionic complexes of erbium and cerium with Trilon B on weakly basic anionite. Russ. J. Phys. Chem. 90, 664–670 (2016). https://doi.org/10.1134/S0036024416030079
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DOI: https://doi.org/10.1134/S0036024416030079