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Thermodynamic Properties and Phase Equilibria in the H2O–HNO3–UO2(NO3)2 System

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Abstract

A set of Pitzer interaction parameters is proposed to describe thermodynamic properties of the H2O–UO2(NO3)2–HNO3 solution within the temperature range of 15 to 50°C and ranges of concentrations of HNO3 and UO2(NO3)2 of 0 to 40 and 0 to 8 mol/kg, respectively. The experimental data on the vapor pressures of the volatile components of the system, degree of dissociation of nitric acid, and solid–liquid equilibria are used to determine these parameters.

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Funding

This work was financially supported by the Russian Foundation for Basic Research (project no. 18-29-24167).

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Authors and Affiliations

  1. Department of Chemistry, Moscow State University, 119991, Moscow, Russia

    A. S. Maliutin, N. A. Kovalenko & I. A. Uspenskaya

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  1. A. S. Maliutin
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  2. N. A. Kovalenko
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  3. I. A. Uspenskaya
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Correspondence to A. S. Maliutin.

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Translated by E. Boltukhina

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Maliutin, A.S., Kovalenko, N.A. & Uspenskaya, I.A. Thermodynamic Properties and Phase Equilibria in the H2O–HNO3–UO2(NO3)2 System. Moscow Univ. Chem. Bull. 75, 65–71 (2020). https://doi.org/10.3103/S0027131420020091

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  • DOI: https://doi.org/10.3103/S0027131420020091

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