| Titre : | Regeneration of coked al-promoted sulfated zirconia catalysts by high pressure hydrogen (2010) |
| Auteurs : | Yang, Ying-Chieh, Auteur ; Hung-Shan Weng, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 4, Fevrier 2010) |
| Article en page(s) : | pp 1982–1985 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Catalysts High Pressure Hydrogen. |
| Résumé : | To avoid the inconvenience and danger caused by using air or oxygen as a regenerating gas for coked catalysts, this work proposes an effective regeneration method for the fouled Al-promoted sulfated zirconia (AL/SZ) catalyst. This work tries hydrogen for regenerating fouled catalysts; nevertheless, regaining activity is low when introducing atmospheric hydrogen as a regenerating gas. Fortunately, over 98% of original activity can be regained using high pressure hydrogen (2.1 MPa) at 250 °C within 8 h. The operation temperature for this new regeneration method is much lower than that for conventional methods using air or oxygen as a regenerating gas. This method does not affect the product distribution of n-C4 isomerization. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie900338b |
