Silica-supported bismuth molybdate catalysts have been prepared by impregnation, structurally characterized and examined as improved catalysts for the selective oxidation of propylene to acrolein. Catalysts with a wide range of loadings (from 10 to 90 wt%) of beta bismuth molybdate (β-Bi2Mo2O9) were studied to provide a better understanding about the distribution of active sites, and to elucidate the role of lattice oxygen in the reaction. The catalyst containing 50 wt% of beta bismuth molybdate on SiO2 was found to possess good distribution of active sites and sufficiently high lattice oxygen, which resulted in an extraordinary increase of the catalytic activity.
- Sol–gel synthesis
- Supported beta bismuth molybdate
- Selective oxidation
Duc, D. T., Ha, H. N., Fehrmann, R., Riisager, A., & Le, M. T. (2011). Selective oxidation of propylene to acrolein by silica-supported bismuth molybdate catalysts. Research on Chemical Intermediates, 37(6), 605-616. https://doi.org/10.1007/s11164-010-0233-3