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An acidic two - step hydrothermal process to enhance acetic acid production from carbohydrate biomass / Yan Fang in Industrial & engineering chemistry research, Vol. 51 N° 12 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 12 (Mars 2012) . - pp. 4759–4763 Titre : An acidic two - step hydrothermal process to enhance acetic acid production from carbohydrate biomass Type de document : texte imprimé Auteurs : Yan Fang, Auteur ; Xu Zeng, Auteur ; Peng Yan, Auteur Année de publication : 2012 Article en page(s) : pp. 4759–4763 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Hydrothermal  process  Carbohydrate  Biomass Résumé : An acidic two-step hydrothermal process to improve acetic acid production was investigated. In the first-step reaction, levulinic acid is formed in the presence of an acid catalyst. In the second-step reaction, the levulinic acid is converted into acetic acid via oxidation with newly supplied oxygen. The acetic acid yield from this two-step process was much higher than that without the acid catalysts in the first step. The acetic acid yield reached 23% with a purity of 47% from glucose and 26% with a purity of 52% from fructose. These yields were achieved at a reaction temperature of 523 K, a reaction time of 300 s, and pH 0.5 with HCl as an acid catalyst for the first step and at a reaction temperature of 523 K, a reaction time of 60 s, and an oxygen supply of 100% for the second step. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202506c [article] An acidic two - step hydrothermal process to enhance acetic acid production from carbohydrate biomass [texte imprimé] / Yan Fang, Auteur ; Xu Zeng, Auteur ; Peng Yan, Auteur . - 2012 . - pp. 4759–4763. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 12 (Mars 2012) . - pp. 4759–4763 Mots-clés : Hydrothermal  process  Carbohydrate  Biomass Résumé : An acidic two-step hydrothermal process to improve acetic acid production was investigated. In the first-step reaction, levulinic acid is formed in the presence of an acid catalyst. In the second-step reaction, the levulinic acid is converted into acetic acid via oxidation with newly supplied oxygen. The acetic acid yield from this two-step process was much higher than that without the acid catalysts in the first step. The acetic acid yield reached 23% with a purity of 47% from glucose and 26% with a purity of 52% from fructose. These yields were achieved at a reaction temperature of 523 K, a reaction time of 300 s, and pH 0.5 with HCl as an acid catalyst for the first step and at a reaction temperature of 523 K, a reaction time of 60 s, and an oxygen supply of 100% for the second step. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202506c