Catalytic performances of support, as-prepared and activated Ag25/carbon catalystsa.
| Catalyst | Activity | Selectivity | ||
|---|---|---|---|---|
| Conversion (%) | TON | SO (%) | BA (%) | |
| Carbon support | 15.3 | 90.9 | 9.1 | |
| Ag25/carbon as-prepared | 51.6 | 1114 | 95.1 | 4.9 |
| Ag25/carbon@250 °C | 61.4 | 1325 | 94.0 | 6.0 |
| Ag25/carbon@350 °C | 49.9 | 1078 | 92.6 | 7.4 |
| Ag25/carbon@450 °C | 46.6 | 1006 | 89.4 | 10.6 |
a
Reaction conditions: styrene (8.0 mmol), TBHP (24 mmol), MeCN (5.0 mL), catalyst (20 mg) in a flask under reflux, stirring speed (600 rpm), reaction temperature of (82 °C), reaction time (24 h). Ratio of substrate to metal is 2157 : 1. TON = moles of product/moles of Ag.