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Density of acid sites of the supported HSiW catalysts.
| Catalyst | Chemisorbed NH3 (mmolNH3 gcat−1) | Chemisorbed NH3 (mmolNH3 gHSiW−1) |
|---|---|---|
| Bulk HSiW | 0.512 | 0.512 |
| HSiW/TiO2 | 0.274 | 0.517 |
| HSiW/SiO2 | 0.382 | 0.503 |
| HSiW/ZrO2 | 0.209 | 0.454 |
| HSiW/Al2O3 | 0.476 | 0.643 |
