Magnesium-Modified Co3O4 Catalyst with Remarkable Performance for Toluene Low Temperature Deep Oxidation

Co3O4, MgCo2O4 and MgO materials have been synthesized using a simple co-precipitation approach systematically characterized. The total conversion of toluene to CO2 H2O over spinel with wormlike morphology has investigated. Compared single metal oxides (Co3O4 MgO), the highest activity exhibited almost 100% oxidation at 255 °C. obtained results are analogous typical precious supported catalysts. activation energy (38.5 kJ/mol) is found be much lower than that Co3O4 (68.9 ((87.8 kJ/mol)). Co Mg oxide, as-prepared exhibits larger surface area, absorbed oxygen more vacancies, thus mobility species due its good redox capability. Furthermore, samples specific low-temperature reducibility adsorbed oxygenated ratio decreased as follows: > MgO; which completely in line catalytic performance trends constitute reasons for high excellent towards oxidation. overall finding by ab initio molecular dynamics simulations on suggest process follows Mars–van Krevelen mechanism.