Table 1. Comparison of Thermokinetic and Thermodynamic Parameters of Activation (at 25 °C) to Determine the Largest Thermal Degradation Component of the ILs Obtained by the O–F–W Method.
IL | Ea (kJ mol–1) | ln A (min–1) | ΔG‡ (kJ mol–1) | ΔH‡ (kJ mol–1) | ΔS‡ (kJ mol–1 K–1) | –TΔS‡ (kJ mol–1) |
---|---|---|---|---|---|---|
[BisOct(MIM)2][2Br] | 149.07a | 29.57a | 158.94a | 146.60a | –0.0414a | 12.34a |
144.95b | 29.64b | 154.65b | 142.47b | –0.0408b | 12.18b | |
[BisOct(MIM)2][2BF4] | 169.16a | 26.80a | 185.89a | 166.68a | –0.0644a | 19.21a |
189.06b | 30.51b | 186.46b | 186.58b | –0.0336b | 10.02b | |
[BisOct(MIM)2][2NO3] | 224.70a | 43.93a | 198.96a | 222.22a | 0.0778a | –23.25a |
235.61b | 46.62b | 203.20b | 233.13b | 0.1003b | –29.92b | |
[BisOct(MIM)2][2NTf2] | 84.82a | 21.11a | 115.63a | 82.35a | –0.1118a | 33.33a |
92.20b | 23.42b | 117.31b | 89.72b | –0.0925b | 27.60b | |
[BisOct(MIM)2][2SCN] | 148.50a | 29.39a | 158.81a | 146.02a | –0.0429a | 12.80a |
133.95b | 25.83b | 153.08b | 131.47b | –0.0724b | 21.61b | |
[Oct(MIM)][Br] | 138.98a | 28.10a | 152.49a | 136.50a | –0.0536a | 15.98a |
191.44b | 39.39b | 176.98b | 188.96b | 0.402b | –11.98b |
10% of activity loss.
50% of activity loss.