[2B13-15] Utilization of biomass(4)

[2B15] Continuous conversion of glycerol to lactic acids over metal-acid bifunctional catalyst

○Erisa Kano¹, Takeshi Aihara¹, Hiroki Miura^1,2,3, Tetsuya Shishido^1,2,3 (1. Tokyo Metropolitan University, 2. Research Center for Hydrogen Energy-based Society, 3. Elements Strategy Initiative for Catalysts and Batteries Kyoto University)

In this study, we investigated the continuous synthesis of lactic acid (LA) from glycerol (Gly) in a flow reactor. Various supported Pt catalysts were investigated, and LA was formed when a support with an acid point was used. In particular, when layered niobium oxide (L-Nb₂O₅) was used as a support, oxidation by Pt and acid catalyzed reaction by L-Nb₂O₅ proceeded efficiently, stable Gly conversion was obtained without the addition of base, and LA was obtained continuously with high LA selectivity (>70 %) for a long time.

Keywords:Lactic acid, Continuous conversion, Supported Pt Catalyst