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Cellulose Conversion with Tungstated-Alumina-Based Catalysts: Influence of the Presence of Platinum and Mechanistic Studies

Authors

  • Flora Chambon,

    1. Institut de Recherche sur la Catalyse et l'Environnement de Lyon, IRCELYON, Université Lyon 1, CNRS, UMR5256, 2 avenue Albert Einstein, 69626 Villeurbanne (France)
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  • Dr. Franck Rataboul,

    Corresponding author
    1. Institut de Recherche sur la Catalyse et l'Environnement de Lyon, IRCELYON, Université Lyon 1, CNRS, UMR5256, 2 avenue Albert Einstein, 69626 Villeurbanne (France)
    • Institut de Recherche sur la Catalyse et l'Environnement de Lyon, IRCELYON, Université Lyon 1, CNRS, UMR5256, 2 avenue Albert Einstein, 69626 Villeurbanne (France)
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  • Dr. Catherine Pinel,

    1. Institut de Recherche sur la Catalyse et l'Environnement de Lyon, IRCELYON, Université Lyon 1, CNRS, UMR5256, 2 avenue Albert Einstein, 69626 Villeurbanne (France)
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  • Dr. Amandine Cabiac,

    1. IFPEN-Lyon, BP3, 69360 Solaize (France)
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  • Dr. Emmanuelle Guillon,

    1. IFPEN-Lyon, BP3, 69360 Solaize (France)
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  • Dr. Nadine Essayem

    1. Institut de Recherche sur la Catalyse et l'Environnement de Lyon, IRCELYON, Université Lyon 1, CNRS, UMR5256, 2 avenue Albert Einstein, 69626 Villeurbanne (France)
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Abstract

The performances of platinum supported on tungstated alumina (Pt/AlW) in the hydrothermal conversion of cellulose at 190 °C under H2 pressure were evaluated and compared to that of Pt-free tungstated alumina (AlW). We show that the presence of Pt significantly increased the extent of conversion and led to a different product distribution with the formation of acetol and propylene glycol as the main products and a global yield of up to 40 %. Based on previous reports, we propose the formation of pyruvaldehyde on the Lewis acid sites of the tungstated alumina as a key intermediate. Pyruvaldehyde can then be transformed to acetol and propylene glycol or lactic acid depending on the presence or absence of supported Pt.

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