Lanthanides are among the major fission products formed during irradiation. Compounds of the formula RE6UO12 are known to be formed in RE-U-O systems, where RE represents lanthanides. Heat capacity measurements were carried out on La6UO12, Sm6UO12 and Eu6UO12 using differential scanning calorimetry in the temperature range 298 to 800 K. From the measured heat capacity values, other thermodynamic functions such as enthalpy, entropy and Gibbs energy functions were computed. The heat capacity values of La6UO12, Sm6UO12 and Eu6UO12 at 298 K are 407, 439 and 461 J K-1mol.-1 respectively.
Compounds
#
Formula
Name
1
La6O12U
lanthanum uranium oxide
2
O12Sm6U
samarium uranium oxide
3
Eu6O12U
europium uranium oxide
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
Small sample (50 mg) DSC
7
POMD
2
Molar heat capacity at constant pressure, J/K/mol ; Crystal
Temperature, K; Crystal
Pressure, kPa; Crystal
Crystal
Small sample (50 mg) DSC
7
POMD
3
Molar heat capacity at constant pressure, J/K/mol ; Crystal