Table 1.
The influence of the preparation conditions of CNTs-IL-CALB on the biocatalyst activity.
| CNTs:IL (g/g) | Solvent 1 | IL Content in CNTs-IL (wt.%) 2 | CALB Content in CNTs-IL-CALB (wt.%) 2 | Yield of n-Butyl Acrylate (%) 3 |
|---|---|---|---|---|
| 1:0.5 | acetonitrile | 1.8 | 4.2 | 99 |
| 1:0.5 | methanol | 1.1 | 4.3 | 84 |
| 1:0.5 | THF | 2.4 | 3.1 | 54 |
| 1:1.0 | acetonitrile | 3.0 | 1.2 | 97 |
| 1:0.2 | acetonitrile | 0.8 | 5.4 | 91 |
| 1:0.1 | acetonitrile | 0.6 | 4.4 | 76 |
1 solvent used at the first step of CNTs-IL-CALB preparation; 2 determined by TGA; 3 determined by GC; Preparation of CNTs-IL-CALB conditions: 1st step: CNTs 1.0 g, [N(CH3)3GlcOCH3][N(Tf)2] 0.1–1.0 g, solvent 25 mL; 2nd step: CNTs-[N(CH3)3GlcOCH3][N(Tf)2] 1.0 g, 7.5 g CALB, water 30 mL; Reaction conditions: AA 0.072 g (1 mmol), n-BuOH 0.149 g (2 mmol), cyclohexane 1 mL, CNTs-[N(CH3)3GlcOCH3][N(Tf)2]-CALB 0.150 g, 24 h, 25 °C, 250 rpm.