Table 4.
Transesterification of (±) 1-phenyl ethanol in ionic liquid with Candida rugosa lipase immobilized on MWNTs. All experiments were carried out in duplicate and the results within each pair differed by < 5%.
| Entry | Lipase preparation | Time (h) | Conversion (%) | ee (%) | Ea |
| 1 | Free CRL | 12 | 1 | - | - |
| 2 | Free CRL | 24 | 2 | - | - |
| 3 | Free CRL | 36 | 5 | - | - |
| 4 | CRL adsorbed on MWNTs | 12 | 17 | >99 | 250 |
| 5 | CRL adsorbed on MWNTs | 24 | 34 | >99 | 350 |
| 6 | CRL adsorbed on MWNTs | 36 | 37 | >99 | 360 |
aEnantioselectivity (E) = ln [1 - c(1 + eep)]/ln [1 - c(1 - eep)], where c = ees/(ees + eep).