Desorption temperature and acid quantity of parent and steamed HZSM-5 zeolitesa.
| Catalyst | T peak (°C) | Acid amount (μmol gcat−1) | |||
|---|---|---|---|---|---|
| LT peak | HT peak | Weak acidity | Strong acidity | Total acidity | |
| HZ | 261 | 468 | 369 | 258 | 627 |
| HZ-300 | 255 | 468 | 383 | 216 | 599 |
| HZ-400 | 249 | 456 | 303 | 160 | 463 |
| HZ-500 | 238 | 436 | 189 | 109 | 298 |
LT peak represents low temperature desorption peak. HT peak represents high temperature desorption peak.