Heat capacity and thermodynamic functions of SmPO sub(4) at 10-1600 K

Heat capacity and thermodynamic functions of SmPO sub(4) at 10-1600 K

The heat capacity of SmPO sub(4) was measured by adiabatic calorimetry at 10-346 K. Thermodynamic functions of Sm orthophosphate at 10-1600 K were calculated based on our experimental and available literature data. The Gibbs energy of Sm orthophosphate formation is Delta sub( )fG super(0)(298.15 K)...

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Veröffentlicht in:Geochemistry international 2015-07, Vol.53 (7), p.607-616
Hauptverfasser: Gavrichev, K S, Gurevich, V M, Ryumin, MA, Tyurin, A V, Komissarova, L N
Format: Artikel
Sprache:eng
Schlagworte:
Adiabatic flow
Calorimetry
Formations
Geochemistry
Heat capacity
Mathematical analysis
Specific heat
Thermodynamics
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Zusammenfassung:The heat capacity of SmPO sub(4) was measured by adiabatic calorimetry at 10-346 K. Thermodynamic functions of Sm orthophosphate at 10-1600 K were calculated based on our experimental and available literature data. The Gibbs energy of Sm orthophosphate formation is Delta sub( )fG super(0)(298.15 K) - Delta sub( )fG super(0)(10 K) = -1844.7 plus or minus 2.4 kJ mol super(-1).
ISSN:0016-7029
1556-1968
DOI:10.1134/S0016702915070046