Effect of calcination temperature on the oxidation of benzene with ozone at low temperature over mesoporous α-Mn2O3

► The mesoporous α-Mn2O3 was applied to benzene oxidation with ozone for the first time. ► The mesoporous α-Mn2O3 calcined at 300 °C showed higher catalytic activity due to its high reduction ability. ► From the TPR analysis, the mesoporous α-Mn2O3 calcined at 300 °C showed the highest reduction power.