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Kinetic study of 5-Hydroxymethylfurfural synthesis from fructose in high pressure CO2–Water two-phase system

Labauze, Hélène and Camy, Séverine and Floquet, Pascal and Benjelloun-Mlayah, Bouchra and Condoret, Jean-Stéphane Kinetic study of 5-Hydroxymethylfurfural synthesis from fructose in high pressure CO2–Water two-phase system. (2019) Industrial & Engineering Chemistry Research, 58 (1). 92-100. ISSN 0888-5885

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Official URL: https://doi.org/10.1021/acs.iecr.8b04694

Abstract

In this work, synthesis of 5-hydroxymethylfurfural (5-HMF) from lignocellulosic biomass derived hexoses, fructose in our case, was developed in two-phase supercritical CO2–water systems. Conditions of reactions were above 10 MPa and 120 °C, i.e., the two-phase reacting mixture can be regarded as a subcritical water–supercritical CO2 system. From kinetic experiments and their modeling, it was possible to assess the effect of CO2 as a potential reversible acid catalyst. The kinetic model developed in this study considers also the catalytic contribution of acid byproducts, as proton providers, for the reaction of dehydration of fructose into 5-HMF. Selectivity toward 5-HMF was improved with increasing pressure to reach a maximum of 80 mol % after 3 h of reaction at 150 °C and under 25 MPa of CO2, as only 60% was achieved without the use of pressurized CO2.

Item Type:Article
HAL Id:hal-02135793
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Compagnie Industrielle de la Matière Végétale - CIMV (FRANCE)
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Deposited By: Loetitia MOYA
Deposited On:10 May 2019 08:44

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