Plasma induced toluene decomposition on alumina-supported Mn-based composite oxides catalysts

Abstract

This paper presents a two-stage hybrid plasma catalyst system for toluene decomposition in air. It consists of a dielectric barrier discharge reactor and Mn-based composite oxides catalysts. Experimental results show that removal efficiency of toluene was 10 % by only plasma, but a 100 % destruction efficiency as well as 100% ozone removal was achieved by plasma catalysis at a specific energy density of 28.8 J L-1. The catalytic decomposition efficiency of toluene and ozone produced in the first stage is in the following order: NTP+ Mn-Co/Al > NTP + Mn-Ce/Al > NTP+ Mn-Ni/Al > NTP. Compared to other catalysts coupled with non-thermal plasma in a two-stage plasma catalytic reactor, the alumina-supported Mn-based composite oxides catalysts showed a better performance for toluene and ozone removals, especially the Mn-Co/Al catalyst. © Published under licence by IOP Publishing Ltd.