Table 1. Textural properties, Au particle size and metal dispersion of Au catalysts with different Au loading.
| Catalystsa | SBET(m2g−1) | Vtotal(cm3g−1) | Pore diameter (nm) | Au size averageb (nm) | Metal dispersion (%) |
|---|---|---|---|---|---|
| SBA-15 | 782 | 1.0 | 6.0–10.0 | — | — |
| 0.2 wt.%Au/MPTMS-SiO2-cal | 814 | 0.71 | 3.5–6.0 | 2.5 | 41.5 |
| 0.4 wt.%Au/MPTMS-SiO2-cal | 810 | 0.71 | 3.5–6.0 | 2.5 | 41.6 |
| 0.95 wt.%Au/MPTMS-SiO2-cal | 862 | 0.73 | 3.5–6.0 | 2.5 | 41.5 |
| 1.2 wt.%Au/MPTMS-SiO2-cal | 817 | 0.71 | 3.5–6.0 | 3.5 | 34.0 |
| 1.6 wt.% Au/MPTMS-SiO2-cal | 840 | 0.70 | 3.5–6.0 | 9.0 | 14.6 |
SBET, surface area calculated by the BET method. Vtotal, total pore volume calculated at P/Po = 0.998. Pore diameter calculated from the adsorption branch using BJH method.
aThe contents of Au in different catalysts were measured by ICP-MS.
bThe Au particle size was measured from TEM images.