Abstract : In this paper, we report for the first time a one-pot reaction enabling total transformation of lactic acid to acetic acid over a Mo-V-Nb mixed oxide catalyst having an optimal atomic ratio 19:5:1. The mechanism of the reaction consists in two parallel ways leading to acetic acid: (i) oxi-dehydrogenation of lactic acid to pyruvic acid followed by decarboxylation and (ii) decarbonylation of lactic acid to acetaldehyde followed by oxidation. In the operating conditions we used, the catalyst is very active (total conversion of lactic acid) and selective towards acetic acid (100% selectivity). A 100% yield into acetic acid is hence obtained.
https://hal.univ-lille.fr/hal-02938683 Contributeur : LillOA Université de LilleConnectez-vous pour contacter le contributeur Soumis le : mardi 15 septembre 2020 - 09:40:46 Dernière modification le : mercredi 23 mars 2022 - 15:50:47 Archivage à long terme le : : jeudi 3 décembre 2020 - 05:12:33
Samadhan Lomate, Benjamin Katryniok, Franck Dumeignil, Sébastien Paul. High yield lactic acid selective oxidation into acetic acid over a Mo-V-Nb mixed oxide catalyst. Sustainable Chemical Processes, 2015, Sustainable Chemical Processes, 3, pp.5. ⟨10.1186/s40508-015-0032-7⟩. ⟨hal-02938683⟩