Table 1. CCD of Experiments for 50% OA in Oil.
| std order | run | catalyst (wt %) | temperature (°C) | co-solvent (mL/100 g of oil) |
|---|---|---|---|---|
| 1 | 14 | –1.000 | –1.000 | –1.000 |
| 2 | 20 | 1.000 | –1.000 | –1.000 |
| 3 | 17 | –1.000 | 1.000 | –1.000 |
| 4 | 7 | 1.000 | 1.000 | –1.000 |
| 5 | 5 | –1.000 | –1.000 | 1.000 |
| 6 | 4 | 1.000 | –1.000 | 1.000 |
| 7 | 9 | –1.000 | 1.000 | 1.000 |
| 8 | 3 | 1.000 | 1.000 | 1.000 |
| 9 | 16 | –1.000 | 0.000 | 0.000 |
| 10 | 1 | 1.000 | 0.000 | 0.000 |
| 11 | 6 | 0.000 | –1.000 | 0.000 |
| 12 | 18 | 0.000 | 1.000 | 0.000 |
| 13 | 2 | 0.000 | 0.000 | –1.000 |
| 14 | 13 | 0.000 | 0.000 | 1.000 |
| 15 | 10 | 0.000 | 0.000 | 0.000 |
| 16 | 15 | 0.000 | 0.000 | 0.000 |
| 17 | 19 | 0.000 | 0.000 | 0.000 |
| 18 | 11 | 0.000 | 0.000 | 0.000 |
| 19 | 12 | 0.000 | 0.000 | 0.000 |
| 20 | 8 | 0.000 | 0.000 | 0.000 |
| Reaction parameters | Level (−1) | Level (0) | Level (+1) | |
| catalyst (wt %) | 0.5 | 1.25 | 2 | |
| temperature (°C) | 50 | 60 | 70 | |
| co-solvent (mL/100 g of oil) | 20 | 30 | 40 | |