Ca3SiO5: enthalpy of formation
4 accepted literature formation-enthalpy value(s) (model 4).
Systems: Ca–O–Si
Literature values
| Value | Phase as printed | T (K) | Class | Method | System | Source | Location | Quote |
|---|---|---|---|---|---|---|---|---|
| -2933 kJ/mol (basis unstated) | Triclinic-Ca3SiO5 | 298.15 | model | Ca–O–Si | [1] Abdul 2023 cites Haas 1981 doi | Table 7, p. 8, row 3 report | ||
| -2933 kJ/mol (basis unstated) | Triclinic-Ca3SiO5 | 298.15 | model | Ca–O–Si | [1] Abdul 2023 | Table 7, p. 8, row 2 report | ||
| -2932 kJ/mol (basis unstated) | Monoclinic-Ca3SiO5 | 298.15 | model | Ca–O–Si | [1] Abdul 2023 | Table 7, p. 8, row 1 report | ||
| -2932 kJ/mol (basis unstated) | Rhombohedral-Ca3SiO5 | 298.15 | model | Ca–O–Si | [1] Abdul 2023 | Table 7, p. 8, row 4 report |
Uncertainty budget
Components kept separate, in the value's unit (literature SCHEMA.md, UNCERTAINTY_CALIBRATION.md): effective = max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter). The method floor is the robust between-study scatter of the method class in ORCHID (calibrated) or a documented prior; printed values and printed uncertainties are unchanged.
| Value | Unit | Printed | Reading | Method (class, basis) | Composition | Scatter | Conversion | Effective |
|---|---|---|---|---|---|---|---|---|
| -2933 | kJ/mol (basis unstated) | 0.05 | 35.1 (model_calculated, calibrated) | 35.1 | ||||
| -2933 | kJ/mol (basis unstated) | 0.05 | 35.1 (model_calculated, calibrated) | 35.1 | ||||
| -2932 | kJ/mol (basis unstated) | 0.05 | 35.1 (model_calculated, calibrated) | 35.1 | ||||
| -2932 | kJ/mol (basis unstated) | 0.05 | 35.1 (model_calculated, calibrated) | 35.1 |
Sources
- Wahab Abdul, Chancel Mawalala, Alexander Pisch, Marcus Nigel Bannerman, CaO-SiO2 assessment using 3rd generation CALPHAD models, Cement and Concrete Research 173, 107309 (2023). doi:10.1016/j.cemconres.2023.107309