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.

中文翻译：

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H 2 O–HNO 3 –UO 2（NO 3）2系统中的热力学性质和相平衡

摘要

提出了一组Pitzer相互作用参数来描述H ₂ O–UO ₂（NO ₃）₂ –HNO ₃溶液在15至50°C的温度范围以及HNO ₃和UO ₂（ NO ₃）_2分别为0至40 mol / kg和0至8 mol / kg。有关系统挥发性组分的蒸气压，硝酸的离解度和固液平衡的实验数据可用于确定这些参数。