Regeneration of sulfur deactivated Ni - based biomass syngas cleaning catalysts / Liyu Li in Industrial & engineering chemistry research, Vol. 49 N° 20 (Octobre 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 20 (Octobre 2010) . - pp. 10144–10148 Titre : Regeneration of sulfur deactivated Ni - based biomass syngas cleaning catalysts Type de document : texte imprimé Auteurs : Liyu Li, Auteur ; Christopher Howard, Auteur ; David L. King, Auteur Année de publication : 2011 Article en page(s) : pp. 10144–10148 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Biomass Catalysts Résumé : Nickel-based catalysts have been widely tested for reforming undesired tar and methane from hot biomass-derived syngas. However, nickel catalysts readily deactivate through the adsorption of sulfur compounds in the syngas. We report a new regeneration process that can effectively regenerate sulfur-poisoned Ni reforming catalysts. This process consists of four sequential treatments: (1) controlled oxidation at 750 °C in 1% O2, (2) decomposition at 900 °C in inert gas, (3) reduction at 900 °C in 2% H2, and (4) reaction at 900 °C under reforming condition. This 4-step regeneration process might have advantages over the conventional steam regeneration process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101032x [article] Regeneration of sulfur deactivated Ni - based biomass syngas cleaning catalysts [texte imprimé] / Liyu Li, Auteur ; Christopher Howard, Auteur ; David L. King, Auteur . - 2011 . - pp. 10144–10148. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 20 (Octobre 2010) . - pp. 10144–10148 Mots-clés : Biomass Catalysts Résumé : Nickel-based catalysts have been widely tested for reforming undesired tar and methane from hot biomass-derived syngas. However, nickel catalysts readily deactivate through the adsorption of sulfur compounds in the syngas. We report a new regeneration process that can effectively regenerate sulfur-poisoned Ni reforming catalysts. This process consists of four sequential treatments: (1) controlled oxidation at 750 °C in 1% O2, (2) decomposition at 900 °C in inert gas, (3) reduction at 900 °C in 2% H2, and (4) reaction at 900 °C under reforming condition. This 4-step regeneration process might have advantages over the conventional steam regeneration process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101032x

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