Table 3. XPS Data of Different Catalysts.
| catalysts | P (V4+) | P (V5+) | Vava | Lat-O/Sur-O |
|---|---|---|---|---|
| fresh catalyst | 0.59 | 0.41 | 4.41 | 1.39 |
| evaluated catalyst | 0.13 | 0.87 | 4.87 | 1.30 |
Vav = 4 × P (V4+) + 5 × P (V5+).
| catalysts | P (V4+) | P (V5+) | Vava | Lat-O/Sur-O |
|---|---|---|---|---|
| fresh catalyst | 0.59 | 0.41 | 4.41 | 1.39 |
| evaluated catalyst | 0.13 | 0.87 | 4.87 | 1.30 |
Vav = 4 × P (V4+) + 5 × P (V5+).