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Thermodynamic Functions of PtS2 in a Wide Temperature Range

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Inorganic Materials Aims and scope

Abstract—

The thermodynamic properties of crystalline platinum disulfide have been studied in the range from 5 to 875 K. The isobaric heat capacity of PtS2 has been determined by two methods: by adiabatic calorimetry from 5.32 to 344.96 K and by differential scanning calorimetry in the range 344.6–874.6 K. Using the experimental Cp(T) data, we evaluated the standard thermodynamic functions of platinum disulfide in a wide temperature range. The high-temperature Cp measurement results have been used to investigate regression models based on the Maier–Kelley and Khodakovsky equations for the temperature dependence of its isobaric heat capacity in the range from 298 to 875 K. The Debye characteristic temperature ΘD of PtS2 has been evaluated as a function of temperature.

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ACKNOWLEDGMENTS

In this research, we used equipment at the Shared Physical Characterization Facilities Center, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences.

Funding

This work was supported by the Russian Science Foundation, project no. 17-17-01220.

Part of this work (PtS2 synthesis) was supported by the Russian Federation Government (program no. 211, agreement no. 02.A03.21.0006) and the Russian Federation Ministry of Science and Higher Education (program for improving the competitiveness of Kazan Federal University).

The study of the heat capacity of PtS2 in this work was supported by the Russian Federation Ministry of Science and Higher Education (state research target for the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, basic research).

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991, Moscow, Russia

    A. V. Tyurin & A. V. Khoroshilov

  2. Dubna State University, Universitetskaya ul. 19, 141982, Dubna, Moscow oblast, Russia

    N. A. Polotnyanko & D. S. Testov

  3. Korzhinskii Institute of Experimental Mineralogy, Russian Academy of Sciences, ul. Akademika Osip’yana 4, 142432, Chernogolovka, Noginskii raion, Moscow oblast, Russia

    D. A. Chareev

  4. Institute of Physics and Technology, Ural Federal University, ul. Mira 21, 620002, Yekaterinburg, Russia

    D. A. Chareev

  5. Kazan (Volga Region) Federal University, Kremlevskaya ul. 18, 420008, Kazan, Tatarstan, Russia

    D. A. Chareev

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  1. A. V. Tyurin
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  2. N. A. Polotnyanko
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  3. D. S. Testov
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  4. D. A. Chareev
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  5. A. V. Khoroshilov
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Correspondence to A. V. Tyurin.

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Translated by O. Tsarev

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Tyurin, A.V., Polotnyanko, N.A., Testov, D.S. et al. Thermodynamic Functions of PtS2 in a Wide Temperature Range. Inorg Mater 56, 116–125 (2020). https://doi.org/10.1134/S002016852002017X

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