Removal of Toluene from Polluted Air Using Ozone and Pt Catalyst

Abstract

In this study, removal of volatile organic compounds (VOCs) from polluted air by using ozone based Pt catalyst were investigated. Highly active Pt catalysts for toluene oxidation could be obtained by using colloid-deposition method. The type of the support is an importance of supported Pt/MeOx (Me = Fe, Ni, Zn, Al) catalysts. The results indicated that process of toluene oxidation based on Pt catalyst is dependent on the type of catalyst, temperature and concentration of ozone. As can be seen, in the absence and presence of ozone, Pt/Fe₂O₃ catalyst has the best efficiency for the removal of toluene in the various temperatures. Furthermore, at 50-200 ºC, the rate of toluene omission would be higher when the concentration of applied ozone increased.