Table 4.
Henry reaction of benzaldehyde with nitromethane over SA/LDH series catalysts a.
| Entry | Catalysts b | Conversion of 1 (%) | Selectivity to 2 (%) | Selectivity to 3 (%) |
|---|---|---|---|---|
| 1 | SA/LDH-Mg2Al-80 | 96.8 | 2.7 | 97.3 |
| 2 | SA/LDH-Mg2Al-105 | 59.3 | 30.9 | 69.1 |
| 3 | SA/LDH-Mg2Al-150 | 51.9 | 28.1 | 71.9 |
| 4 | SA/LDH-Mg5Al2-80 | 98.2 | 21.4 | 78.6 |
| 5 | SA/LDH-Mg3Al-80 | 92.7 | 12.8 | 87.2 |
| 6 | SA | Trace | — | Trace |
| 7 | LDH-Mg2Al-80 | 75.9 | 13.6 | 86.4 |
| 8 | None | Trace | — | Trace |
a Reaction conditions: catalyst, 50 mg; benzaldehyde, 1 mmol; o-xylene, 0.1 g; nitromethane, 5 mL; time, 6 h; reaction temperature, 80 °C; b All the catalysts were activated by calcination at 723 K for 2 h.