Complete oxidation of 1,2-dichlorobenzene over V2O5-TiO2 and MnOx-TiO2 aerogels

Abstract

Catalytic destruction of 1,2-dichlorobenzene was carried out over two types of aerogels, vanadia-titania and manganese oxide-titania. Reactions were performed in a plug flow reactor in the range of 150-600 A degrees C. Both catalysts resulted in very high selectivity to carbon oxides and produced negligible amount of hydrocarbon byproducts. Over the vanadia-titania catalysts, the chlorinated compound was relatively more efficiently destructed at lower temperature, while selectivity towards carbon dioxide was much higher over manganese oxide-titania aerogel catalysts. Vanadiatitania catalysts, regardless of the preparation methods, showed a tendency to produce carbon monoxide with 35-45% selectivity throughout the reaction temperature range while manganese oxide-titania exhibited more than 90% CO2 selectivity at above 400 A degrees C.