Catalytic oxidation of toluene over Pd/Co3AlO catalysts derived from hydrotalcite-like compounds: Effects of preparation methods

▶ Hydrotalcite-derived Pd/Co3AlO catalysts were prepared by various synthesis methods. ▶ The preparation methods had a s ignificant influence on toluene catalytic activity. ▶ Pd/Co3AlO (COP) with highly dispersed Pd species exhibits the highest activity. ▶ The synergistic effect of Pd and Co3O4 is a decisive factor in catalyst activity.