Catalytic Oxidation of Glycerol over Pt Supported on MOF-Derived Carbon Nanosheets

A series of NPCNs doped with transition metals supported Pt catalysts were preparedand evaluated for the selective oxidation of glycerol to glyceric acid under non-alkaline conditions. The transition metal contained in the catalyst was found to affect its performance and selectivity for GLYA, with the Pt/Zr@NPCNs catalyst showing the highest catalytic activity . These materials were characterized using BET surface area analysis, TEM, XRD, XPS and CO2-TPD. The results showed that the small size of the Pt nanoparticles , the interaction between the Pt nanoparticles and the support, and the unique textural properties of the catalyst all promoted glycerol conversion and GLYA selectivity. A Zr concentration of 1.5 wt% and a support preparation temperature of 800 °C were found to provide a catalyst with the optimal performance that exhibited a glycerol conversion and selectivity for GLYA of 68.62% and 77.29%, respectively, at an initial O 2 pressure of 10 bar and 60 °C after 6 h. Even after being recycled five times, this material provided a GLYA selectivity of approximately 75%, although the glycerol conversion decreased from 68% to 50%. The insights may provide new suggestions on design of efficient support for the selective oxidation of polyols.