Effect of CeO 2 morphologies on toluene catalytic combustion

Abstract Catalytic combustion is an efficient and economic technology to eliminate toluene, and CeO 2 shows very good performance in this kind of reactions. In this work, three kinds of CeO 2 catalysts with different morphologies (rod, hollow sphere and cube) have been prepared, and there performances for toluene catalytic combustion were compared. It is found that CeO 2 -HS shows the best catalytic activities for toluene degradation. Toluene conversion could get 90% at 207 °C. That’s because CeO 2 -HS catalyst have largest surface area and most oxygen vacancies, which are vital for toluene catalytic oxidation. CeO 2 -HS also shows very good catalyst stability, reusability and excellent tolerance to water.