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The heat capacity and thermodynamic functions of Bi12.5Lu1.5ReO24.5 in the temperature range of 175–550 K

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Abstract

The heat capacity of Bi12.5Lu1.5ReO24.5 was measured for the first time in the temperature range of 175–550 K. Calorimetric experiments were performed using differential scanning calorimetry (DSC). Temperature dependence of the molar heat capacity in the form C op,m (T) = 324.87 + 3.0307 T − 4.5672 × 10−3 T 2 + 2.7319 × 10−6 T 3 was derived from experimental data. The enthalpy and entropy increments (H om (T) − H om (298.15), S om (T) − S om (298.15)) were evaluated from heat capacity data (T = 175–550 K). The temperature dependences of formation enthalpy and Gibbs energy for Bi12.5Lu1.5ReO24.5 were calculated based on measured heat capacities and data on standard formation enthalpy obtained by us earlier.

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Acknowledgements

This work was supported by Karlsruhe Institute of Technology (Germany), Russian Fund of Basic Research (Project 13-08-00169) and Program of Fundamental Investigation of SB RAS.

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Authors and Affiliations

  1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia, 630090

    N. I. Matskevich, D. Pischur & S. G. Kozlova

  2. Institute of Solid State Physics, Karlsruhe Institute of Technology, 76344, Karlsruhe, Germany

    N. I. Matskevich & Th. Wolf

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  1. N. I. Matskevich
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  2. Th. Wolf
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  3. D. Pischur
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  4. S. G. Kozlova
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Correspondence to N. I. Matskevich.

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Matskevich, N.I., Wolf, T., Pischur, D. et al. The heat capacity and thermodynamic functions of Bi12.5Lu1.5ReO24.5 in the temperature range of 175–550 K. J Therm Anal Calorim 124, 1745–1748 (2016). https://doi.org/10.1007/s10973-016-5316-y

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  • DOI: https://doi.org/10.1007/s10973-016-5316-y

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