Catalytic Oxidation of Volatile Organic Compounds by Using Spinel Mixed Oxide Catalyst- A Review

Abstract

Volatile organic compounds (VOCs) are the main sources of air pollution because of their toxic properties. Recently, catalytic combustion presents many advantages, such as high combustion efficiency and low emission of unburnt hydrocarbons. Among some techniques used to reduce VOC emission, catalytic oxidation is recommended especially for highly diluted VOCs. Selection of catalytic materials for the reduction of VOCs is not easy because the activity depends on the specific molecule, synthesis method and many parameters can affect the catalyst activity and resistance. Spinel type mixed metal oxides are considered as novel catalysts for remediation of volatile organic compounds promising because of their catalytic activity and robust stability. The present review focuses on the application of spinel type mixed oxides in combustion of VOCs. The effects of synthesis method, promoter and particle size dependence are discussed. The proposed reaction mechanism for combustion of VOCs over these catalysts is addressed.