Table 1 Kinetic mechanism of char/CO2 gasification and the derived kinetic parameters.
Kinetic Model | A2 | A4 | ||||||
---|---|---|---|---|---|---|---|---|
Avrami-Erofeev (m=2) | Avrami-Erofeev (m=4) | |||||||
Integral function | [−ln(1−x)]1/2 | [−ln(1−x)]1/4 | ||||||
Sample | T/oC | k/min−1 | R2 | Ea/kJ mol−1 | T/oC | k/min−1 | R2 | Ea/kJ mol−1 |
S1 | 1000 | 0.01796 | 0.9805 | 95.7 | 1000 | 0.00895 | 0.9107 | 92.6 |
1100 | 0.05381 | 0.9952 | 1100 | 0.02590 | 0.9456 | |||
1200 | 0.05999 | 0.9230 | 1200 | 0.02874 | 0.8401 | |||
S2 | 1000 | 0.09571 | 0.9280 | 12.1 | 1000 | 0.05371 | 0.9909 | 13.8 |
1100 | 0.10628 | 0.8985 | 1100 | 0.06145 | 0.9954 | |||
1200 | 0.11164 | 0.9031 | 1200 | 0.06397 | 0.9905 |