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| catalyst | syringaldehyde yield (%) |
|---|---|
| LaFe0.2Cu0.8O3 | 4.38 ± 0.09 |
| LaFe0.4Cu0.6O3 | 3.56 ± 0.11 |
| LaFe0.8Cu0.2O3 | 2.00 ± 0.07 |
| LaFe1Cu0O3 | 1.80 ± 0.06 |
| LaNi0.2Cu0.8O3 | 4.00 ± 0.20 |
| LaNi0.6Cu0.4O3 | 3.28 ± 0.24 |
| LaNi0.8Cu0.2O3 | 1.69 ± 0.16 |
| LaNi1Cu0O3 | 1.16 ± 0.11 |
Dealkali lignin as raw material, liquid/lignin at 50:1 (v/w), catalyst/lignin at (g/g) at 1:20, 30 mL 1 moL/L NaOH, 0.8 MPa O2, 160 °C, 2 h.
