No. | Concentration of cerium nitrate (M) | Concentration of cobalt nitrate (M) | Aging temperature (˚C) |
A1 | 0.5 | 0.1 | 25 |
A2 | 0.5 | 0.3 | 25 |
A3 | 0.5 | 0.5 | 25 |
B1 | 0.5 | 0.1 | 0 |
B2 | 0.5 | 0.3 | 0 |
B3 | 0.5 | 0.5 | 0 |
C1 | 0.5 | 0.1 | 70 |
C2 | 0.5 | 0.3 | 70 |
C3 | 0.5 | 0.5 | 70 |