The thermodynamic properties of uranyl metaborate |
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| Authors: | N. G. Chernorukov N. N. Smirnova A. V. Knyazev M. N. Marochkina A. V. Ershova |
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| Affiliation: | (1) Nizhni Novgorod State University, pr. Gagarina 23, Nizhni Novgorod, 603950, Russia |
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| Abstract: | The standard enthalpy of formation of crystalline UO2(BO2)2 at 298.15 K was determined by reaction calorimetry (?2542.5 ± 3.5 kJ/mol). The heat capacity of this compound was measured over the temperature range 6–302 K by adiabatic vacuum calorimetry. The thermodynamic functions were calculated, including the standard entropy (502.8 ± 2.1 J/(mol K)) and Gibbs function of formation (?2392.5 ± 4.0 kJ/mol) at 298.15 K. The standard thermodynamic functions of reactions with the participation of uranyl metaborate were determined and analyzed. |
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