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Influence of structure type of Al2O3 on dehydration of methanol for dimethyl ether synthesis / Chang Won Seo in Industrial & engineering chemistry research, Vol. 47 N°17 (Septembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°17 (Septembre 2008) . - p. 6573–6578 Titre : Influence of structure type of Al2O3 on dehydration of methanol for dimethyl ether synthesis Type de document : texte imprimé Auteurs : Chang Won Seo, Auteur ; Kwang Deok Jung, Auteur ; Kwan Young Lee, Auteur Année de publication : 2008 Article en page(s) : p. 6573–6578 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Methanol  Alumina  properties  (Y-Al2O3  and  n-Al2O3)  catalysts Résumé : This study focused on the effect of alumina properties on the catalytic performance in the dehydration of methanol to synthesize dimethyl ether. The catalysts (Y-Al2O3 and n-Al2O3) were prepared from boehmite and bayerite, respectively, via calcination at various temperatures. With heat treatment, the properties of alumina have been changed significantly. Under identical reaction conditions, Y-Al2O3 calcined at 500 °C and n-Al2O3 calcined at 600 °C showed the highest catalytic activity, because of high acid site density among the same types of alumina. Interestingly, n-Al2O3 showed higher catalytic activity than Y-Al2O3, although both catalysts possess comparable acidic properties. This means the structure type of alumina is crucial to determine catalytic performance in this reaction. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800106e [article] Influence of structure type of Al2O3 on dehydration of methanol for dimethyl ether synthesis [texte imprimé] / Chang Won Seo, Auteur ; Kwang Deok Jung, Auteur ; Kwan Young Lee, Auteur . - 2008 . - p. 6573–6578. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°17 (Septembre 2008) . - p. 6573–6578 Mots-clés : Methanol  Alumina  properties  (Y-Al2O3  and  n-Al2O3)  catalysts Résumé : This study focused on the effect of alumina properties on the catalytic performance in the dehydration of methanol to synthesize dimethyl ether. The catalysts (Y-Al2O3 and n-Al2O3) were prepared from boehmite and bayerite, respectively, via calcination at various temperatures. With heat treatment, the properties of alumina have been changed significantly. Under identical reaction conditions, Y-Al2O3 calcined at 500 °C and n-Al2O3 calcined at 600 °C showed the highest catalytic activity, because of high acid site density among the same types of alumina. Interestingly, n-Al2O3 showed higher catalytic activity than Y-Al2O3, although both catalysts possess comparable acidic properties. This means the structure type of alumina is crucial to determine catalytic performance in this reaction. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800106e