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Hydrolysis and decomposition of cellulose in brönsted acidic ionic liquids under mild conditions / Ananda S. Amarasekara in Industrial & engineering chemistry research, Vol. 48 N° 22 (Novembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 10152–10155 Titre : Hydrolysis and decomposition of cellulose in brönsted acidic ionic liquids under mild conditions Type de document : texte imprimé Auteurs : Ananda S. Amarasekara, Auteur ; Onome S. Owereh, Auteur Année de publication : 2010 Article en page(s) : pp. 10152–10155 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Brönsted  acidic  ionic  liquids  Cellulose  dissolves Résumé : Cellulose dissolves in Brönsted acidic ionic liquids 1-(1-propylsulfonic)-3-methylimidazolium chloride and 1-(1-butylsulfonic)-3-methylimidazolium chloride up to 20 g/100 g ionic liquid by gentle mixing at room temperature. Hydrolysis of cellulose can be carried out in these ionic liquid solutions by the addition of 2.0 equiv of water per glucose unit of cellulose and heating the solution at 70 °C and at atmospheric pressure with or without preheating to give glucose along with other reducing sugars. The hydrolysis of Sigmacell cellulose (DP ∼ 450) in 1-(1-propylsulfonic)-3-methylimidazolium chloride produced the highest total reducing sugar (62%) and glucose (14%) yields and was attained in 1 h of preheating at 70 °C and 30 min of heating at 70 °C, after adding water. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901047u [article] Hydrolysis and decomposition of cellulose in brönsted acidic ionic liquids under mild conditions [texte imprimé] / Ananda S. Amarasekara, Auteur ; Onome S. Owereh, Auteur . - 2010 . - pp. 10152–10155. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 10152–10155 Mots-clés : Brönsted  acidic  ionic  liquids  Cellulose  dissolves Résumé : Cellulose dissolves in Brönsted acidic ionic liquids 1-(1-propylsulfonic)-3-methylimidazolium chloride and 1-(1-butylsulfonic)-3-methylimidazolium chloride up to 20 g/100 g ionic liquid by gentle mixing at room temperature. Hydrolysis of cellulose can be carried out in these ionic liquid solutions by the addition of 2.0 equiv of water per glucose unit of cellulose and heating the solution at 70 °C and at atmospheric pressure with or without preheating to give glucose along with other reducing sugars. The hydrolysis of Sigmacell cellulose (DP ∼ 450) in 1-(1-propylsulfonic)-3-methylimidazolium chloride produced the highest total reducing sugar (62%) and glucose (14%) yields and was attained in 1 h of preheating at 70 °C and 30 min of heating at 70 °C, after adding water. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901047u