Email this article Heat capacity and thermodynamic functions of thulium orthophosphate TmPO4 in the range of 10–1350 K
- Authors: Ryumin M.A.1, Gurevich V.M.2, Khoroshilov A.V.1, Tyurin A.V.1, Gavrichev K.S.1
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Affiliations:
- Kurnakov Institute of General and Inorganic Chemistry
- Vernadsky Institute of Geochemistry and Analytical Chemistry
- Issue: Vol 91, No 12 (2017)
- Pages: 2310-2316
- Section: Chemical Thermodynamics and Thermochemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/169790
- DOI: https://doi.org/10.1134/S003602441711019X
- ID: 169790
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Abstract
The heat capacity of TmPO4 in temperature ranges of 9.11–346.05 and 304.6–1344.6 K is measured via adiabatic and differential scanning calorimetry, respectively. The measurement data are used to calculate the temperature dependences of the heat capacity, entropy, change in enthalpy, and reduced Gibbs energy of TmPO4 in the range of 10–1344 K. The Gibbs energy of formation of thulium orthophosphate from elements ΔfG0(298.15 K) is determined.
About the authors
M. A. Ryumin
Kurnakov Institute of General and Inorganic Chemistry
Author for correspondence.
Email: Ryumin@igic.ras.ru
Russian Federation, Moscow, 117907
V. M. Gurevich
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: Ryumin@igic.ras.ru
Russian Federation, Moscow, 119991
A. V. Khoroshilov
Kurnakov Institute of General and Inorganic Chemistry
Email: Ryumin@igic.ras.ru
Russian Federation, Moscow, 117907
A. V. Tyurin
Kurnakov Institute of General and Inorganic Chemistry
Email: Ryumin@igic.ras.ru
Russian Federation, Moscow, 117907
K. S. Gavrichev
Kurnakov Institute of General and Inorganic Chemistry
Email: Ryumin@igic.ras.ru
Russian Federation, Moscow, 117907
