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The role of ozone in the plasma-catalytic destruction of environmental pollutants

Paper ID Volume ID Publish Year Pages File Format Full-Text
47950 46486 2009 5 PDF Available
Title
The role of ozone in the plasma-catalytic destruction of environmental pollutants
Abstract

The destruction of low concentrations of toluene and cyclohexane in air streams using the combination of a novel multistage, non-thermal plasma reactor with either a MnO2 or a MnO2-CuO catalyst has been investigated. It is found possible to get complete destruction of the organic pollutant when the plasma and catalyst were combined. The different catalysts produced different outcomes in terms of the residual ozone in the outlet stream and the extent of oxidation to CO2. Neither of these compounds react to any measurable extent with ozone in the gas-phase nor are they decomposed by the catalyst at the temperature of the experiment. It is deduced that adsorption of ozone onto the catalyst surface and its subsequent dissociation into reactive atomic oxygen species is the key step in the heterogeneous destruction of toluene and cyclohexane.

Keywords
Plasma; Catalysis; Plasma-catalysis; Ozone; Toluene; Cyclohexane
First Page Preview
The role of ozone in the plasma-catalytic destruction of environmental pollutants
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 90, Issues 1–2, 25 July 2009, Pages 157–161
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis