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Regeneration of coked al-promoted sulfated zirconia catalysts by high pressure hydrogen / Yang, Ying-Chieh in Industrial & engineering chemistry research, Vol. 49 N° 4 (Fevrier 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 4 (Fevrier 2010) . - pp 1982–1985 Titre : Regeneration of coked al-promoted sulfated zirconia catalysts by high pressure hydrogen Type de document : texte imprimé Auteurs : Yang, Ying-Chieh, Auteur ; Weng, Hung-Shan, Auteur Année de publication : 2010 Article en page(s) : pp 1982–1985 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : 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 [article] Regeneration of coked al-promoted sulfated zirconia catalysts by high pressure hydrogen [texte imprimé] / Yang, Ying-Chieh, Auteur ; Weng, Hung-Shan, Auteur . - 2010 . - pp 1982–1985. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 4 (Fevrier 2010) . - pp 1982–1985 Mots-clés : 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