title: Toluene oxidation by non-thermal plasma combined with palladium catalysts.
abstract: The oxidation of toluene in air was investigated using a dielectric barrier discharge (DBD) combined with a Pd/Al2O3 catalyst. When using only plasma, rather low selectivity toward CO2 was obtained: 32-35%. By filling the DBD reactor with Pd/Al2O3 catalyst the CO2 selectivity was significantly enhanced (80-90%), however, a large amount of toluene was desorbed from the catalyst when the discharge was operated. By filling a quarter of the discharge gap with catalyst and placing the rest of the catalyst downstream of the plasma reactor, an important increase of CO2 selectivity (~75%) and a 15% increase in toluene conversion were achieved as compared to the results with plasma alone. The catalyst exhibited a very good stability in this reaction.
authors.affiliation: Department for Plasma Physics and Nuclear Fusion, National Institute for Lasers, Plasma and Radiation Physics Magurele, Bucharest, Romania.
authors.forename: Monica
authors.initials: M
authors.lastname: Magureanu
authors.affiliation: Department for Plasma Physics and Nuclear Fusion, National Institute for Lasers, Plasma and Radiation Physics Magurele, Bucharest, Romania.
authors.forename: Daniela
authors.initials: D
authors.lastname: Dobrin
authors.affiliation: Department for Plasma Physics and Nuclear Fusion, National Institute for Lasers, Plasma and Radiation Physics Magurele, Bucharest, Romania.
authors.forename: Nicolae B
authors.initials: NB
authors.lastname: Mandache
authors.affiliation: Department of Organic Chemistry, Biochemistry and Catalysis, University of Bucharest Bucharest, Romania.
authors.forename: Bogdan
authors.initials: B
authors.lastname: Cojocaru
authors.affiliation: Department of Organic Chemistry, Biochemistry and Catalysis, University of Bucharest Bucharest, Romania.
authors.forename: Vasile I
authors.initials: VI
authors.lastname: Parvulescu
keywords: CO2 selectivity; Pd/Al2O3 catalyst; non-thermal plasma; total oxidation of toluene; volatile organic compounds