Table 5 The acidic sites of partial samples at different temperatures determined by Py-IR method.
From: The effect of positioning cations on acidity and stability of the framework structure of Y zeolite
Samples | 200 °C (mmol/g) | 300 °C (mmol/g) | 400 °C (mmol/g) | |||
|---|---|---|---|---|---|---|
B | L | B | L | B | L | |
HY | 0.3376 | 0.1090 | 0.2747 | 0.1035 | 0.1834 | 0.0965 |
6LaHY | 0.2851 | 0.0878 | 0.2082 | 0.0764 | 0.1179 | 0.0613 |
10LaHY | 0.2383 | 0.1166 | 0.1562 | 0.0793 | 0.0653 | 0.0527 |
14LaHY | 0.1999 | 0.1295 | 0.1211 | 0.0870 | 0.0450 | 0.0500 |
9AEHY | 0.2324 | 0.1387 | 0.1582 | 0.0679 | 0.0827 | 0.0492 |
15AEHY | 0.0971 | 0.1200 | 0.0688 | 0.0673 | 0.0344 | 0.0440 |
21AEHY | 0.0739 | 0.1626 | 0.0349 | 0.0810 | 0.0000 | 0.0540 |
