Table 1.
Conditions for hydrothermal synthesis of ZnCr- and NiCr-LDHs.
| Experiment Series | Temperature, °C | Duration, d | HMT Excess | MII:MIII Ratio | Heating Rate, °C∙h−1 | Stirring Rate, rpm |
|---|---|---|---|---|---|---|
| Default conditions | 150 | 1 | 3-fold | 2:1 | 150 | − |
| Variable temperature | 100 | 1 | 3-fold | 2:1 | 150 | − |
| 125 | ||||||
| 150 | ||||||
| 175 | ||||||
| 200 | ||||||
| Variable duration | 150 | 0.25 | 3-fold | 2:1 | 150 | − |
| 1 | ||||||
| 3 | ||||||
| 7 | ||||||
| Variable HMT excess | 150 | 1 | 2-fold | 2:1 | 150 | − |
| 3-fold | ||||||
| 4-fold | ||||||
| Variable MII:MIII ratio | 150 | 1 | 3-fold | 2:1 | 150 | − |
| 3:1 | ||||||
| 4:1 | ||||||
| Slow heating and stirring | 150 (ZnCr) | 1 | 3-fold | 2:1 | 25 | 1000 |
| 200 (NiCr) |