Abstract
The activities of oxides in stoichiometric spinel MgAl2O4 in the temperature range 1851–2298 K were determined from the data obtained by the Knudsen effusion mass spectrometry. The resulting Gibbs energies of spinel formation from simple oxides, the enthalpies and entropies of spinel formation from simple oxides (–12.02 ± 1.14 kJ/mol and 5.03 ± 0.56 J/(mol K), respectively), and the spinel melting enthalpy (55.81 ± 4.62 kJ/mol) satisfactorily agree with the available thermodynamic data.
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Original Russian Text © S.I. Shornikov, 2017, published in Zhurnal Fizicheskoi Khimii, 2017, Vol. 91, No. 2, pp. 289–296.
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Shornikov, S.I. Thermodynamic properties of spinel MgAl2O4: A mass spectrometric study. Russ. J. Phys. Chem. 91, 287–294 (2017). https://doi.org/10.1134/S0036024417020303
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DOI: https://doi.org/10.1134/S0036024417020303