The enthalpy of a sample of lithium tetrafluoroberyllate, LiBeF, of 98.6 percent purity was measured relative to 273 K at eleven temperatures from 323 to 873 K. Corrections were applied for the impurities and for extensive premelting below the melting point (745 K). The enthalpy and heat capacity, and the entropy and Gibbs free-energy function relative to the undetermined value of were computed from empirical functions of temperature derived from the data, and are tabulated from 273 to 900 K.
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Temperature-Dependent Properties of Molten LiBeF Salt Using Molecular Dynamics.
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Department of Physics and Astronomy, University of Missouri-Kansas City, Kansas City, Missouri 64110-2499, United States.
Molten lithium tetrafluoroberyllate (LiBeF) salt, also known as FLiBe, with a 2:1 mixture of LiF and BeF is being proposed as a coolant and solvent in advanced nuclear reactor designs, such as the molten salt reactor or the fluoride salt cooled high-temperature reactor. We present the results on the structure and properties of FLiBe over a wide range of temperatures, 0-2000 K, from high-throughput molecular dynamics simulation using a supercell model of 504 atoms. The variations in the local structures of solid and liquid FLiBe with temperature are discussed in terms of a pair distribution function, coordination number, and bond angle distribution.
View Article and Find Full Text PDFMeasured Enthalpy and Derived Thermodynamic Properties of Solid and Liquid Lithium Tetrafluoroberyllate, LiBeF, from 273 to 900 K.
J Res Natl Bur Stand A Phys Chem
January 1969
Institute for Basic Standards, National Bureau of Standards, Washington, D.C. 20234.
The enthalpy of a sample of lithium tetrafluoroberyllate, LiBeF, of 98.6 percent purity was measured relative to 273 K at eleven temperatures from 323 to 873 K. Corrections were applied for the impurities and for extensive premelting below the melting point (745 K).
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