Towards efficient Pd/Mn3O4 catalyst with enhanced acidic sites and low temperature reducibility for Benzene abatement

•The activity of Pd catalyst as a result of (zinc, titanium, copper and manganese) support is explored.•Mn3O4 with improved acidic sites is synthesized through a series of base and acidic treatments.•Pd/Mn3O4 showed activity as low as 140 °C compared to Pd supported on commercial supports.•Pd/ Mn3O4 showed a T100 at 240 °C, 20, 40 and 60 °C better than Pd/ Mn3O4-C, Pd/ZnO and Pd/CuO.