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Heat Capacity and Thermodynamic Functions of PdS

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Abstract

The temperature-dependent heat capacity of vysotskite, PdS, has been determined for the first time by adiabatic, relaxation, and differential scanning calorimetry in a wide temperature range and standard thermodynamic functions of PdS have been calculated. The 298.15-K values thus obtained are = 43.65 ± 0.09 J/(mol K), S° = 51.98 ± 0.10 J/(mol K), Н°(298.15 К) − Н°(0) = 8.03 ± 0.02 kJ/mol, and Ф° = 25.03 ± 0.05 J/(mol K). Using the present results and data in the literature, we obtained ΔfH°(PdS, 298.15 K)  = –74.0 ± 1.0 kJ/mol and ΔfG°(PdS, 298.15 K) = –68.7 ± 1.0 kJ/mol.

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ACKNOWLEDGMENTS

This research became possible by virtue of the thermodynamic database created by Dr. Sci. (Chem.), Prof. I.L. Khodakovskii (1941–2012).

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

Funding

The study of the heat capacity of PdS 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. Dubna State University, Universitetskaya ul. 19, 141982, Dubna, Moscow oblast, Russia

    N. A. Polotnyanko & D. A. Chareev

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

    A. V. Tyurin & A. V. Khoroshilov

  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

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  1. N. A. Polotnyanko
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  2. A. V. Tyurin
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  4. A. V. Khoroshilov
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Correspondence to N. A. Polotnyanko.

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Translated by O. Tsarev

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Polotnyanko, N.A., Tyurin, A.V., Chareev, D.A. et al. Heat Capacity and Thermodynamic Functions of PdS. Inorg Mater 56, 683–689 (2020). https://doi.org/10.1134/S0020168520070134

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