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State of difficultly soluble uranosilicates MIHSiUO6 ⋅ nH2O (M + = Li+, Na+, K+, Rb+, Cs+, NH +4 ) in saturated aqueous solutions

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Abstract

The solubility of uranosilicates MIHSiUO6 ⋅ nH2O (MI = Li+, Na+, K+, Rb+, Cs+, NH +4 ) in aqueous solutions at 25°C was studied experimentally. The equilibrium constants of reactions that occur at dissolution of uranosilicates in acidic and neutral solutions were calculated. The composition of the equilibrium solutions was studied. The standard Gibbs energies of formation of the compounds were calculated from the solubility data. The behavior of the uranosilicates under various conditions was predicted on the basis of the previously suggested quantitative physicochemical model of the state of the heterogeneous system crystalline uranosilicate-aqueous solution.

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Authors and Affiliations

  1. Lobachevsky Nizhni Novgorod State University, Nizhni Novgorod, Russia

    N. G. Chernorukov, O. V. Nipruk, A. V. Knyazev & E. Yu. Pegeeva

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  1. N. G. Chernorukov
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  2. O. V. Nipruk
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  3. A. V. Knyazev
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  4. E. Yu. Pegeeva
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Translated from Radiokhimiya, Vol. 46, No. 5, 2004, pp. 418–422.

Original Russian Text Copyright © 2004 by Chernorukov, Nipruk, Knyazev, Pegeeva.

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Chernorukov, N.G., Nipruk, O.V., Knyazev, A.V. et al. State of difficultly soluble uranosilicates MIHSiUO6 ⋅ nH2O (M + = Li+, Na+, K+, Rb+, Cs+, NH +4 ) in saturated aqueous solutions. Radiochemistry 46, 452–456 (2004). https://doi.org/10.1007/s11137-005-0008-7

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  • DOI: https://doi.org/10.1007/s11137-005-0008-7

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