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Liquid Phase Furfural Oxidation under Uncontrolled pH in Batch and Flow Conditions: The Role of In Situ Formed Base

Abstract : Selective oxidation of furfural to furoic acid was performed with pure oxygen in aqueous phase under mild conditions and uncontrolled pH using hydrotalcite-supported gold nanoparticles as catalyst. Hydrotalcites with different Mg: Al ratios were tested as support. The effects of reaction time, temperature and furfural/catalyst ratio were evaluated. The catalyst Au/HT 4:1 showed the highest activity and selectivity to the desired product, achieving a complete conversion of furfural to furoic acid after 2 h at 110 °C. Further, stability tests were carried out in a continuous stirred-tank reactor and a progressive deactivation of the catalyst due to the leaching of Mg2+ cations from the support inducing changes in the pH of the reaction medium was observed.
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https://hal.univ-lille.fr/hal-03024515
Contributeur : Lilloa Université de Lille <>
Soumis le : mercredi 25 novembre 2020 - 19:26:28
Dernière modification le : mercredi 17 février 2021 - 09:56:08
Archivage à long terme le : : vendredi 26 février 2021 - 20:20:47

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Alessandra Roselli, Yuri Carvalho, Franck Dumeignil, Fabrizio Cavani, Sebastien Paul, et al.. Liquid Phase Furfural Oxidation under Uncontrolled pH in Batch and Flow Conditions: The Role of In Situ Formed Base. Catalysts, MDPI, 2020, Catalysts, 10 (1), pp.73. ⟨10.3390/catal10010073⟩. ⟨hal-03024515⟩

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