From glycerol to lactic acid under inert conditions in the presence of platinum-based catalysts: The influence of support

J. Ftouni (1) , N. Villandier (1) , F. Auneau (1) , M. Besson (2) , L. Djakovitch (2) , C. Pinel (2)

1 IRCELYON - Institut de recherches sur la catalyse et l'environnement de Lyon
2 CDURABLE - IRCELYON-C'Durable

In this work, it was shown that glycerol (Gly) can be effectively converted to lactic acid (LA) under inert atmosphere using a Pt/ZrO2 catalyst. Starting from pure glycerol, at 180 degrees C and under a He pressure of 30 bar, we were able to achieve up to 80% yield of LA after a reaction time of 8 h. The catalysts performance of Pt/TiO2, Pt/C and Pt/ZrO2 were compared showing that using Pt/ZrO2 high conversion and stable LA selectivity were achieved during all the process. Further, using Pt/ZrO2 the LA selectivity was less sensitive to the nature of the reaction atmosphere while using either H-2 or He. While using crude Gly (85% purity), a lower reaction rate was obtained in the presence of Pt/ZrO2, however high selectivity to LA (similar to 80%) was maintained. (C) 2014 Elsevier B.V. All rights reserved.

Domaines: Catalyse; Environnement et Société

J. Ftouni, N. Villandier, F. Auneau, M. Besson, L. Djakovitch, et al.. From glycerol to lactic acid under inert conditions in the presence of platinum-based catalysts: The influence of support. Catalysis Today, 2015, 257, pp.267-273. ⟨10.1016/j.cattod.2014.09.034⟩. ⟨hal-01216623⟩