Low temperature catalytic combustion of o-dichlorobenzene over supported Mn–Ce oxides: effect of support and Mn/Ce ratio

A series of Mn–Ce mixed oxide catalysts supported on cordierite, TiO2 or γ-Al2O3 carriers were tested for their catalytic performance towards hazardous gaseous o-dichlorobenzene combustion. The results indicated that superficial MnOx species vary with carriers such as Mn2O3 on the cordierite, Mn3O4 on the TiO2 and amorphous MnOx on the Al2O3 support. The catalysts supported on cordierite with a 9 : 1 Mn/Ce the ratio presented high catalytic performance in a low temperature range of 150–300 °C, which is due to their better reducibility, well-dispersed manganese oxide and enrichment of available active oxygen species on the catalysts surface.