Hydroformylation of vinyl acetate over catalysts under different reaction timea.
| Entry | Catalyst | Conversion of vinyl acetate (%) | Selectivity for aldehyde (%) | b : 1b |
|---|---|---|---|---|
| 1 | Rh/TNTs (1 h) | 39 | 82 | 100 : 0 |
| 2 | Rh/TNTs (2 h) | 68 | 60 | 100 : 0 |
| 3 | Rh/TNTs (8 h) | 100 | 57 | 100 : 0 |
| 4 | Rh–Ru/TNTs (1 h) | 45 | 57 | 100 : 0 |
| 5 | Rh–Ru/TNTs (2 h) | 71 | 57 | 100 : 0 |
| 6 | Rh–Ru/TNTs (8 h) | 100 | 55 | 100 : 0 |
| 7 | Ru/TNTs (8 h) | 25 | 16 | 100 : 0 |
| 8 | Ru–Rh/TNTs (8 h) | 83 | 45 | 100 : 0 |
| 9 | Rh–Ru/TNTs (200 °C, 8 h) | 85 | 70 | 100 : 0 |
| 10 | Rh–Ru/TNTs-U1 (8 h) | 37 | 51 | 100 : 0 |
a
Reaction conditions: vinyl acetate = 5 mL, solvent (toluene) = 65 mL, catalyst = 0.40 g, syngas pressure 6 MPa (CO/H2 = 1), T = 100 °C.
b
b : l is 2-acetoxy propanal : 3-acetoxy propanal.