Table 2 Common properties of ionic liquids used in this work at 298.15 K and 866 hPa
PILs | MPILs (g mol−1) | CAS number | Purification method | Mass percent (purity) | Water content (ppm) | Analysis method |
|---|---|---|---|---|---|---|
2-Hydroxyethylammonium propionate (MEAP) | 135.16 | 90434-46-1 | Rotary evaporator | > 97 | 209 | H’NMR |
2-Hydroxyethylammonium acetate (MEAA) | 121.13 | 54300-24-2 | Rotary evaporator | > 97 | 186 | H’NMR |
2-Hydroxyethylammonium lactate (MEAL) | 151.16 | 68815-69-0 | Rotary evaporator | > 97 | 235 | H’NMR |