Name: ThermoML Representation of Published Experimental Data from Journal of Chemical Thermodynamics (0021-9614, Elsevier)
Creator: Thermodynamics Research Center
License: https://www.nist.gov/open/license

ABSTRACT

The high-temperature heat capacity of three lanthanide orthophosphates of monazite structure have been measured in the temperature range (450 to 1570) K. The data have been analysed in terms of a lattice term, represented by the 4f0 and 4f7 compounds LaPO4 and GdPO4, and an electronic term for CePO4. The calculated excess heat capacity thus obtained is in reasonable agreement with that calculated from the crystal field energies.

Compounds

#	Formula	Name
1	LaO4P	lanthanum orthophosphate
2	CeO4P	cerium phosphate
3	GdO4P	gadolinium orthophosphate

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	Phase	Method	#Points
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Drop calorimetry	1

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

The high-temperature heat capacity of LnPO4 (Ln = La, Ce, Gd) by drop calorimetry

Popa, K., Sedmidubsky, D., Thiriet, C., Konings, R. J. M.

ABSTRACT