Preparation of Ce–Mn Composite Oxides with Enhanced Catalytic Activity for Removal of Benzene through Oxalate Method

The catalytic activities of CeO(2)-MnO(x) composite oxides synthesized through oxalate method were researched. The results exhibited that the catalytic properties of CeO(2)-MnO(x) composite oxides were higher than pure CeO(2) or MnO(x). When the Ce(at)/Mn(at) ratio was 3:7, the catalytic activity reached the best. In addition, the activities of CeO(2)-MnO(x) synthesized through different routes over benzene oxidation were also comparative researched. The result indicated that the catalytic property of sample prepared by oxalate method was better than others, which maybe closely related with their meso-structures. Meanwhile, the effects of synergistic interaction and oxygen species in the samples on the catalytic ability can’t be ignored.