New mixed oxides catalysts obtained by non-hydrolytic sol-gel investigated for biobased compounds conversion

Brisou, Anna [UCL] Mutin, P. Hubert [ICGM] Chaumonnot, Alexandra [IFP Energies Nouvelles] Debecker, Damien P. [UCL]

Porous binary and ternary mixed oxides combining silica with Nb, Ta, Zr, W and Ti oxides with high specific surface areas and well-controlled compositions have been synthesized via the innovative NHSG technique4. These solids display acidic and basic properties, with mostly weak and medium strength Brönsted and Lewis acid sites. They are good candidates for the use in catalysis to transform some interesting biobased compounds particularly in gas phase. The study will be pursued by characterizing more precisely the materials by TOF-SIMS, MET-EDX, CDCl3-FTIR, chemisorbtion of CO and CO2, CO2-TPD and comparing them to model acidic and basic material (SiO2-SO3H, Silica alumina, MCM-41, SBA-15, Hydrotalcite, MgO). Moreover, further mixed oxides formulations are to be investigated in order to develop innovative catalytic materials and study the potential synergies generated in highly homogeneous ternary mixed oxides.