| Autor: |
Huntelaar, M.E., Booij, A.S., Cordfunke, E.H.P., van der Laan, R.R., van Genderen, A.C.G., van Miltenburg, J.C. |
| Zdroj: |
The Journal of Chemical Thermodynamics; April 2000, Vol. 32 Issue: 4 p465-482, 18p |
| Abstrakt: |
The thermodynamic properties of cerium sesquioxide, Ce 2O 3(s), have been measured. From the low-temperature adiabatic heat capacity measurements in the temperature range 3 K to 420 K, the values forCop, mand Smo, (115.0 ±0.3)J · K−1 · mol−1and (148.8 ±0.4)J · K−1 · mol−1, respectively, have been obtained. The high-temperature enthalpy increment has been measured in the temperature range 470 K to 883 K. The enthalpy of solution has been measured by using isoperibol solution calorimetry at T=298.15 K in 0.250 mol · dm−3HCl(aq). Using all available literature values, the standard molar enthalpy of formation has been derived: ΔfHom{Ce 2O 3(s) , 298.15 K} =−(1812.4 ±1.3)kJ · mol−1. The thermodynamic properties have been calculated to T=1500 K. |
| Databáze: |
Supplemental Index |
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