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Effect of support acidity on liquid - phase hydrogenation of benzene to cyclohexene over Ru – B/ZrO2 catalysts / Gongbing Zhou in Industrial & engineering chemistry research, Vol. 51 N° 38 (Septembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 38 (Septembre 2012) . - pp. 12205-12213 Titre : Effect of support acidity on liquid - phase hydrogenation of benzene to cyclohexene over Ru – B/ZrO2 catalysts Type de document : texte imprimé Auteurs : Gongbing Zhou, Auteur ; Jianliang Liu, Auteur ; Xiaohe Tan, Auteur Année de publication : 2012 Article en page(s) : pp. 12205-12213 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Catalyst  Hydrogenation  Liquid  phase  Acidity Résumé : Ru–B/ZrO2 catalysts using monoclinic, amorphous, and tetragonal ZrO2 as supports were prepared and used for liquid-phase hydrogenation of benzene to cyclohexene. It is identified that both the Lewis acid sites and the Brønsted acid sites existed on monoclinic ZrO2 (ZrO2-M), while there were only Lewis acid sites on amorphous (ZrO2-A) and tetragonal ZrO2 (ZrO2-T). The amount of acid sites on ZrO2-T was the lowest. In liquid-phase hydrogenation of benzene to cyclohexene, the Ru–B/ZrO2-T catalyst exhibited the highest selectivity and yield of cyclohexene, with the maximum yield of cyclohexene being 47%. These results suggest that for ZrO2-supported Ru–B catalysts, the lower was the amount of acid sites on ZrO2, the higher was the selectivity to cyclohexene. Also, the presence of the Brønsted acid sites on ZrO2 is probably adverse to the selectivity toward cyclohexene. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26399670 [article] Effect of support acidity on liquid - phase hydrogenation of benzene to cyclohexene over Ru – B/ZrO2 catalysts [texte imprimé] / Gongbing Zhou, Auteur ; Jianliang Liu, Auteur ; Xiaohe Tan, Auteur . - 2012 . - pp. 12205-12213. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 38 (Septembre 2012) . - pp. 12205-12213 Mots-clés : Catalyst  Hydrogenation  Liquid  phase  Acidity Résumé : Ru–B/ZrO2 catalysts using monoclinic, amorphous, and tetragonal ZrO2 as supports were prepared and used for liquid-phase hydrogenation of benzene to cyclohexene. It is identified that both the Lewis acid sites and the Brønsted acid sites existed on monoclinic ZrO2 (ZrO2-M), while there were only Lewis acid sites on amorphous (ZrO2-A) and tetragonal ZrO2 (ZrO2-T). The amount of acid sites on ZrO2-T was the lowest. In liquid-phase hydrogenation of benzene to cyclohexene, the Ru–B/ZrO2-T catalyst exhibited the highest selectivity and yield of cyclohexene, with the maximum yield of cyclohexene being 47%. These results suggest that for ZrO2-supported Ru–B catalysts, the lower was the amount of acid sites on ZrO2, the higher was the selectivity to cyclohexene. Also, the presence of the Brønsted acid sites on ZrO2 is probably adverse to the selectivity toward cyclohexene. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26399670