Table 6 Activation energies and pre-exponential factors of BS-OH calculated from isoconversional method (Flynn–Wall–Ozawa) at 5, 15 and 45 °C/min
α | β5 | β15 | β45 | ||||||
|---|---|---|---|---|---|---|---|---|---|
Tα | Ea (kJ/mol) | A(s−1) | Tα | Ea (kJ/mol) | A(s−1) | Tα | Ea (kJ/mol) | A(s−1) | |
0.1 | 401 | 33.28 | 4.43 × 105 | 428 | 35.52 | 4.15 × 105 | 445 | 36.93 | 3.99 × 105 |
0.2 | 424 | 35.19 | 2.78 × 106 | 447 | 37.10 | 2.63 × 106 | 465 | 38.59 | 2.53 × 106 |
0.3 | 450 | 37.35 | 3.31 × 105 | 492 | 40.83 | 3.03 × 105 | 492 | 40.83 | 3.03 × 105 |
0.4 | 522 | 43.32 | 3.03 × 103 | 646 | 53.61 | 2.45 × 103 | 652 | 54.11 | 2.42 × 103 |
0.5 | 609 | 50.54 | 4.33 × 105 | 681 | 56.52 | 3.87 × 105 | 701 | 58.18 | 3.76 × 105 |
0.6 | 655 | 54.36 | 2.76 × 108 | 696 | 57.76 | 2.60 × 108 | 721 | 59.84 | 2.51 × 108 |
0.7 | 677 | 56.19 | 8.31 × 108 | 723 | 60.00 | 7.78 × 108 | 738 | 61.25 | 7.62 × 108 |
0.8 | 892 | 74.03 | 3.24 × 106 | 903 | 74.94 | 3.20 × 106 | 799 | 66.31 | 3.62 × 106 |
0.9 | 1113 | 92.37 | 3.67 × 1017 | 1100 | 91.30 | 3.72 × 1017 | 1059 | 87.89 | 3.86 × 1017 |