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Thermodynamics of copper sulfides II. Heat capacity and thermodynamic properties of synthetic covellite, CuS, from 5 to 780.5 K. Enthalpy of decomposition

✍ Scribed by Edgar F. Westrum Jr.; Svein Stølen; Fredrik Grønvold

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
649 KB
Volume
19
Category
Article
ISSN
0021-9614

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Heat capacity, structural and thermodyna
Heat capacity, structural and thermodynamic properties of synthetic klockmannite CuSe at temperatures from 5 K to 652.7 K. Enthalpy of decomposition
✍ Svein Stølen; Helmer Fjellvåg; Fredrik Grønvold; Jadwiga T. Sipowska; Edgar F. W 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 604 KB

The heat capacity of CuSe has been determined by adiabatic shield calorimetry from T15 K to T=(652.720.1) K. At the upper temperature, CuSe disproportionates into Cu2-xSe and a liquid rich in Se. The low temperature hexagonal superstructure, which is based on the covellite-type structure, changes to