Documents disponibles écrits par cet auteur

Modeling the lignin degradation kinetics in an ethanol / formic acid solvolysis approach. Part 1. / James R. Gasson in Industrial & engineering chemistry research, Vol. 51 N° 32 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 32 (Août 2012) . - pp. 10595-10606 Titre : Modeling the lignin degradation kinetics in an ethanol / formic acid solvolysis approach. Part 1. : Kinetic model development Type de document : texte imprimé Auteurs : James R. Gasson, Auteur ; Daniel Forchheim, Auteur ; Tatjana Sutter, Auteur Année de publication : 2012 Article en page(s) : pp. 10595-10606 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Kinetic  model  Kinetics  Modeling Résumé : A formal kinetic model describing the main reaction pathways yielding demethoxylated monomeric phenols from wheat straw lignin in a hydrogen-enriched solvolysis reaction system using ethanol as cosolvent has been developed. The simplified lump model combines both a detailed focus on the deoxygenation reactions at molecular level as well as the reactions of global bulk lumps. The results show that depolymerization of lignin structures is quickly achieved and that deoxygenation reactions largely follow a main route pathway via intermediate methoxyphenols and catechols to give stable phenols in the liquid phase. Observed ethyl group substituents of phenolics are seen to originate from either alkylation reactions of the intermediates, or directly from the depolymerizing structures. A high correlation between primary 4-ethylphenol products and para-coumaryl units in the examined lignin suggests that main reaction pathways are strongly dependent on the type of plant lignin used. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26259763 [article] Modeling the lignin degradation kinetics in an ethanol / formic acid solvolysis approach. Part 1. : Kinetic model development [texte imprimé] / James R. Gasson, Auteur ; Daniel Forchheim, Auteur ; Tatjana Sutter, Auteur . - 2012 . - pp. 10595-10606. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 32 (Août 2012) . - pp. 10595-10606 Mots-clés : Kinetic  model  Kinetics  Modeling Résumé : A formal kinetic model describing the main reaction pathways yielding demethoxylated monomeric phenols from wheat straw lignin in a hydrogen-enriched solvolysis reaction system using ethanol as cosolvent has been developed. The simplified lump model combines both a detailed focus on the deoxygenation reactions at molecular level as well as the reactions of global bulk lumps. The results show that depolymerization of lignin structures is quickly achieved and that deoxygenation reactions largely follow a main route pathway via intermediate methoxyphenols and catechols to give stable phenols in the liquid phase. Observed ethyl group substituents of phenolics are seen to originate from either alkylation reactions of the intermediates, or directly from the depolymerizing structures. A high correlation between primary 4-ethylphenol products and para-coumaryl units in the examined lignin suggests that main reaction pathways are strongly dependent on the type of plant lignin used. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26259763