Decomposition of benzene using alumina-hybrid and catalyst-hybrid plasma reactors

In order to investigate the effects of alumina and metal ions in plasma dis charge, plasma reactors packed with a mixture of BaTiO3 pellets and porous Al2O3 pellets (alumina-hybrid reactor), and with a mixture of BaTiO3 pellet s and metal-supported Al2O3 pellets (catalyst-hybrid reactor) were examined for oxidation of dilute benzene in air. It was found that the oxidative de composition of benzene was enhanced by concentrating benzene on the Al2O3 p ellets and the catalyst pellets. Furthermore, the selectivities to CO2 in t he alumina-hybrid reactor and the catalyst-hybrid reactors were higher than those in the plasma reactor packed with BaTiO3 pellets alone. In particula r, the selectivities to CO2 in the catalyst-hybrid reactors using Ag, Co, C u and Ni/Al2O3 were higher than those from the alumina-hybrid reactor. In a ddition, the presence of the alumina and catalysts suppressed the formation of N2O.