Application of Different Catalysts for Oxidation of Toluene in Absence and Presence of Ozone

Abstract

In this study removal of vapourization organic compounds (VOC) from polluted air by using ozone and zeolite -NaX, -HX and -NaY, a- and g-alumina and ZrO₂ with a self-oscillatory behaviour observed on zeolite -NaX. The self-oscillatory behaviour was examined by means of continuous flow reactions, temperature-programmed oxidation. The complete oxidation of toluene in the absence of ozone for different catalyst bases was between 400-650 ºC that by means of different concentration of ozone as an oxidation factor, this range was decreased to 300-450 ºC. It was observed that by increasing of ozone concentration, the perfect oxidation of toluene occurred in lower temperature. The products of toluene oxidation by using different catalysts are CO₂, CO and HCOOH.