Entry | SiO2/Al2O3a | Surface areab/m2∙g−1 | Pore volumec/mL∙g−1 | Acid amountd/mmol∙g−1 |
1e | 200 | 520 | 0.27 | 0.041 |
2e | 106 | 579 | 0.35 | 0.051 |
3f | 195 | 470 | 0.28 | 0.036 |