Improved Activity and Stability of Chlorobenzene Oxidation Over Transition Metal-Substituted Spinel-Type Catalysts Supported on Cordierite

Industrial catalysts usually encounter great challenges in Cl· deactivation, toxic by-products generation, and stability with a long running operation for catalytic oxidation of chlorinated volatile organic compounds (CVOCs). In this research, spinel-type oxides transition metal substituted as active supported on cordierite (Crd) was identified to degradation chlorobenzene (CB). The Cu1.4Mn1.6O4 considered the main have been identified, which were confirmed by XRD TEM. activities these CuMxMn2−xO4 markedly improved lower calcining temperature shorter time. CuCe0.25Mn1.75O4/Crd catalyst displayed highest activity good due that CeO2 nano-rods structure conducive increase Oads amount, dispersion oxides, strength weak acidity, surface areas pore volume. Moreover, doping exhibited high performance CVOCs elimination attributed storage capacity oxygen, plentiful oxygen vacancies, efficiency breaking C–Cl bond easy shuttles between Ce3+ Ce4+, demonstrated XPS. results indicate CeO2, Oads, ·OH beneficial effects removing into benzene, then improving ring-opening CB degradation.