Activity for the catalytic wet-air oxidation of phenol after 180 min of reaction. Phenol conversion (XC), COD removal (XCOD), initial rate (ri) and intermediate concentration (catechol) as a function of the time for copper and nickel supported catalysts.
| Catalysts | X C a (%) | X COD a (%) | A a (mmol l−1) | r i a (mmol h−1 gphenol−1) |
|---|---|---|---|---|
| CuCe oxi | 47 | 15 | 10 | 404 |
| CuAl oxi | 36 | 31 | 29 | 341 |
| CuAlCe oxi | 55 | 10 | 38 | 809 |
| CuCe red | 32 | 22 | n.d. | 213 |
| CuAl red | 34 | 3 | 32 | 319 |
| CuAlCe red | 54 | 8 | 27 | 681 |
| NiCe red | 41 | 42 | 16 | 319 |
| NiAl red | 36 | 17 | n.d. | 447 |
| NiAlCe red | 51 | 31 | 10 | 292 |
| NiAl oxi | 34 | 22 | n.d. | 575 |
| NiCe oxi | 32 | 10 | n.d. | 617 |
| NiAlCe oxi | 31 | 6 | n.d. | 149 |
a
Obtained after 180 min of reaction, n.d. not detected.