Table 4.
Screening on DES species.
| No. | Abbreviation | Hydrogen bond receptor | Hydrogen bond donor | Mole ratio | Appearance |
|---|---|---|---|---|---|
| 1 | DES-1 | Choline chloride | Maltose | 1 : 1 | Incomplete separation from THF |
| 2 | DES-2 | Choline chloride | Malic acid | 1 : 1 | Incomplete separation from THF |
| 3 | DES-3 | Choline chloride | Lactate | 1 : 2 | Incomplete separation from THF |
| 4 | DES-4 | Choline chloride | Fructose | 1 : 1 | Incomplete separation from THF |
| 5 | DES-5 | Choline chloride | Phenol | 1 : 3 | Completely separated from THF |
| 6 | DES-6 | Choline chloride | Glycerol | 1 : 2 | Incomplete separation from THF |
| 7 | DES-7 | Choline chloride | Propylene glycol | 1 : 2 | Incomplete separation from THF |
| 8 | DES-8 | Choline chloride | Xylitol | 1 : 1 | Incomplete separation from THF |
| 9 | DES-9 | Choline chloride | Urea | 1 : 2 | Incomplete separation from THF |
| 10 | DES-10 | Choline chloride | Acetic acid | 1 : 2 | Incomplete separation from THF |
| 11 | DES-11 | Choline chloride | Citric acid | 1 : 2 | Incomplete separation from THF |