Abstract
SAPO-11 zeolite with special pore structure and tunable acidity shows its potential application in hydrocarbon isomerization. The spacer changes of SAPO-11 zeolite samples prepared by different methods before and after calcination were studied. The unit cell symmetry of SAPO-11 zeolite changed after calcination. An evaluation of the Pd/SAPO-11 with different spacers by n-octane isomerization showed that the compression of the framework took place along the elliptical channel (c-axis) and short axis of elliptical channel (a-axis), while the expansion occurred along the long axis of elliptical channels (b-axis). The larger the unit cell shrank, the more elliptical the elliptical channels. Consequently, it was inconvenient for the product diffusion in the more elliptical channel, leading the product to be cracked deeply, thus the isomer selectivity decreased.
| Original language | English |
|---|---|
| Pages (from-to) | 779-782 |
| Number of pages | 4 |
| Journal | Chinese Journal of Catalysis |
| Volume | 24 |
| Issue number | 10 |
| State | Published - 2003 |
Keywords
- Isomerization
- Isooctane
- N-octane
- Palladium
- Sapo-11 zeolite
- Spacer
- Unit cell structure