1. A greener process for isosorbide production: Kinetic study of the catalytic dehydration of pure sorbitol under microwave
- Author
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Mariana Cunha Felix, Isabelle Polaert, Jean-Christophe Buvat, Lionel Estel, Mélissa Fornasero, Stéphane Marcotte, Laboratoire de Sécurité des Procédés Chimiques (LSPC), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA), Chimie Organique et Bioorganique : Réactivité et Analyse (COBRA), Institut Normand de Chimie Moléculaire Médicinale et Macromoléculaire (INC3M), Institut de Chimie du CNRS (INC)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie Organique Fine (IRCOF), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Work (thermodynamics) ,Isosorbide ,General Chemical Engineering ,Kinetics ,Context (language use) ,010402 general chemistry ,01 natural sciences ,7. Clean energy ,Industrial and Manufacturing Engineering ,Catalysis ,chemistry.chemical_compound ,Chemicals from biomass ,medicine ,Environmental Chemistry ,Organic chemistry ,[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering ,Sugar ,Inert gas ,Microwaves ,010405 organic chemistry ,Chemistry ,General Chemistry ,0104 chemical sciences ,Chemical engineering ,Process intensification ,Yield (chemistry) ,Green process ,Sorbitol ,medicine.drug - Abstract
International audience; ln the context of a more environmentally friendly and economical process development, the use of microwaves has many advantages such as reduced energy consumption and reduced reaction time. The work presented here focuses on the dehydration of sorbitol to isosorbide in the presence of an acid catalyst in a solvent-free system and under microwave heating. The obtained yield is up to 70%. Different optimization parameters of the reaction are investigated as the temperature, the presence of an inert gas, the influence of the pressure, the agitation speed and the catalyst loading. Several species such as intermediate anhydro-hexitol are identified and quantified and a simplified reaction scheme is proposed. A kinetic study is carried out between 120 °C and 160 °C using different catalyst loadings. Several models considering first order reactions or Langmuir–Hinshelwood type equations are studied. The kinetic parameters obtained are evaluated and discussed. We conclude that the kinetics of the reaction is only correctly described by a Langmuir–Hinshelwood type model, including the adsorption–desorption equilibrium of sorbitol on the catalyst.
- Published
- 2013
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