Low-temperature catalytic oxidation of chlorobenzene over MnOx/TiO2-CNTs nano-composites prepared by wet synthesis methods

Catalytic oxidation of chlorobenzene (CB) was studied over MnOx/TiO2-CNTs (carbon nanotube) nano-composites prepared by the solvothermal and sol-gel methods. Microstructures and redox properties of these composites were characterized by X-ray diffraction, electron microscopy, and temperature-programmed reduction. The catalytic activity for CB oxidation was promoted with the introduction of CNTs into MnOx/TiO2, and CB oxidation efficiencies of 90% and almost 100% could be obtained at 150 degrees C and 300 degrees C. respectively, under a gas hour space velocity of 36,000 h(-1). The high catalytic performance could be attributed to the good dispersion of active component and the selective adsorption of CB by CNTs. (C) 2010 Elsevier B.V. All rights reserved.