ABSTRACT

The heat capacity of LuPO4 was measured in the temperature range 6.51 318.03 K. Smoothed experimental values of the heat capacity were used to calculate the entropy, enthalpy and Gibbs free energy from 0 to 320 K. Under standard conditions these thermodynamic values are: C0 p(298.15 K) = 100.0+-0.1JK-1 mol-1, S0(298.15 K) = 99.74+-0.32 JK-1 mol-1, H0(298.15 K)-H0(0) = 16.43+-0.02 kJ mol-1, -[G0(298.15 K)-H0(0)]/T = 44.62+-0.33 JK-1 mol-1. The standard Gibbs free energy of formation of LuPO4 from elements fG0(298.15 K) =-1835.4+-4.2 kJ mol-1 was calculated based on obtained and literature data.

Compounds

#	Formula	Name
1	LuO4P	lutetium phosphate

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Vacuum adiabatic calorimetry	132
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Vacuum adiabatic calorimetry	46
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Vacuum adiabatic calorimetry	46
POMD	1	Molar entropy, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	Vacuum adiabatic calorimetry	46

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Heat capacity and thermodynamic functions of LuPO4 in the range 0 320K

Gavrichev, K. S., Smirnova, N. N., Gurevich, V. G., Danilov, V. P., Tyurin, A. V., Ryumind, M. A., Komissarova, L. N.

ABSTRACT