Table 1. Textural Characteristics and Elemental Composition of Samples.
| textural
properties of various samples |
quantity
of sulfo groups (wt %) |
|||||
|---|---|---|---|---|---|---|
| catalyst | SBET (m2/g) | Vpore (cm3/g) | dpore (Å) | elemental analysis | titration method | quantity of molybdenum |
| TiO2 | 51 | 0.12 | 84 | |||
| Mo/TiO2 | 48 | 0.11 | 80 | 4.8 | ||
| TiO2-SO3H | 28 | 0.07 | 77 | 22.3 | 21.0 | |
| Mo/TiO2-SO3H | 18 | 0.06 | 72 | 21.5 | 20.1 | 4.9 |
| Mo/TiO2a | 45 | 0.10 | 78 | 4.0 | ||
| Mo/TiO2-SO3Ha | 17 | 0.06 | 71 | 21.3 | 20.2 | 4.9 |
a
Catalysts after 7 oxidation cycles, washed with acetone to remove sulfones and dried.