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Alkaline ionic liquids as catalysts / Yong-Shui Qu in Industrial & engineering chemistry research, Vol. 51 N° 40 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13008-13013 Titre : Alkaline ionic liquids as catalysts : A novel and green process for the dehydration of carbohydrates to give 5-hydroxymethylfurfural Type de document : texte imprimé Auteurs : Yong-Shui Qu, Auteur ; Yan-Lei Song, Auteur ; Chong-Pin Huang, Auteur Année de publication : 2012 Article en page(s) : pp. 13008-13013 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Dehydration  Catalyst  Ionic  liquid Résumé : An efficient process for the conversion of carbohydrates into 5-hydroxymethylfurfural (5-HMF) catalyzed by the room temperature ionic liquid (IL) 1-butyl-3-methylimidazolium hydroxide ([BMIM]OH), using dimethyl sulfoxide (DMSO) as solvent, has been developed. The yield of 5-HMF obtained by hydrolysis of fructose at 160 °C with a mass ratio IL:fructose of 0.5 was 91.6%. The effects of varying the solvent, IL concentration, temperature, and reaction time on the reaction were studied in detail. The activation energy of fructose conversion was determined to be 99.2 kJ·mol―1, with a pre-exponential factor of 2.1 × 108. Furthermore, the catalyst also exhibited good activity for the dehydration of sucrose to 5-HMF under the same conditions. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451449 [article] Alkaline ionic liquids as catalysts : A novel and green process for the dehydration of carbohydrates to give 5-hydroxymethylfurfural [texte imprimé] / Yong-Shui Qu, Auteur ; Yan-Lei Song, Auteur ; Chong-Pin Huang, Auteur . - 2012 . - pp. 13008-13013. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13008-13013 Mots-clés : Dehydration  Catalyst  Ionic  liquid Résumé : An efficient process for the conversion of carbohydrates into 5-hydroxymethylfurfural (5-HMF) catalyzed by the room temperature ionic liquid (IL) 1-butyl-3-methylimidazolium hydroxide ([BMIM]OH), using dimethyl sulfoxide (DMSO) as solvent, has been developed. The yield of 5-HMF obtained by hydrolysis of fructose at 160 °C with a mass ratio IL:fructose of 0.5 was 91.6%. The effects of varying the solvent, IL concentration, temperature, and reaction time on the reaction were studied in detail. The activation energy of fructose conversion was determined to be 99.2 kJ·mol―1, with a pre-exponential factor of 2.1 × 108. Furthermore, the catalyst also exhibited good activity for the dehydration of sucrose to 5-HMF under the same conditions. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451449