Catalytic complete oxidation of 1,2-dichloroethane over Al-Ti mixed oxide supported VOx catalyst

Abstract

Chlorinated volatile organic compounds (CVOCs) are of hazardous atmospheric contaminants that can cause substantial harmful effects on human and environment. Herein, highly active composite catalysts of VOx supported on Al-Ti mixed oxide were prepared by a sol-gel process followed by a wet-impregnation method, and they were investigated for catalytic combustion of 1,2-dichloroethane (DCE) as representative CVOCs. The VOx/Al-Ti mixed oxide composite catalysts showed the highly active and stable performance toward the catalytic oxidation of DCE, as compared with the corresponding single metal oxides or Al-Ti mixed oxides. Considering the characterization analysis combined with the catalytic performance results, both acidic property of Al-Ti mixed oxides and redox feature of VOx catalysts seem to play critical roles in the complete oxidation of 1,2-dichlomethane. The strategy of catalyst design developed in this work may provide the way for exploitation of earthabundant, nonprecious and efficient composite catalysts for catalytic CVOCs removal processes.