Ceria modified crystalline mesoporous Cr2O3 based nanocomposites supported metal oxide for benzene complete oxidation

Abstract Crystalline mesoporous chromium oxide (P4VP–Cr2O3) was synthesized and used as carrier of metal (Cu, Mn, Co) oxides for benzene complete oxidation. Influence of the ceria promoter on catalytic performance of MnO x /P4VP–Cr2O3 was investigated. The results show that P4VP–Cr2O3 has abundant mesopores, which exhibits blocky morphology with crystal sizes ranging from 5 to 15 μm, giving a uniform pore size centered at 18.4 nm. P4VP–Cr2O3 exhibits a high degree of crystallinity, and active sites have been successfully loaded into P4VP–Cr2O3. Ceria promoter, smaller MnO x crystallites and strong interaction among the metal oxides are the key factors to enhance the catalytic activity.