Table 2. Arrhenius Parameters for the Aragonite–Calcite Transformation Determined by the Coats and Redfern Plot by Adopting Several g(α) Values.
function | g(αtr) | Ea,tr/kJ mol–1 | Atr/s–1 | –γa |
---|---|---|---|---|
JMA(1) | –ln(1 – αtr) | 247.5 ± 6.8 | (1.47 ± 0.01) × 1015 | 0.9985 |
JMA(1.5) | [−ln(1 – αtr)]2/3 | 161.0 ± 4.5 | (7.23 ± 0.01) × 108 | 0.9984 |
R(3) | 1 – (1 – αtr)1/3 | 221.6 ± 7.7 | (5.43 ± 0.01) × 1012 | 0.9976 |
Correlation coefficient of the linear regression analysis.