Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/S0920-5861(02)00015-9
Title (Primary) Improved oxidation of air pollutants in a non-thermal plasma
Author Roland, U.; Holzer, F.; Kopinke, F.-D.
Journal Catalysis Today
Year 2002
Department TUCHEM
Volume 73
Issue 3-4
Page From 315
Page To 323
Language englisch
Abstract The performance of non-thermal plasma (NTP) for the removal of organic air pollutants (especially in low concentrations) is improved by the introduction of ferroelectric and catalytically active materials into the discharge zone of an NTP reactor. Experiments with model systems (various contaminants and packed-bed materials) have shown that such a modification of a homogeneous gas-phase plasma can overcome the most serious restrictions of the NTP technique at its present state of the art: the incomplete total oxidation (i.e. the low selectivity to CO2) and the energetic inefficiency.

Placing a ferroelectric packed-bed material in the discharge zone was shown to result in a lowering of the energy input required. The main effects of plasma catalysis enabled by the introduction of a catalytically active material were an enhanced conversion of pollutants and a higher CO2 selectivity. These improvements are based on the presence of short-lived oxidising species in the inner volume of porous catalysts. Additionally, the formation of a reservoir of adsorbed oxidants in the NTP zone could be shown, The combination of both modifications (ferroelectric packed-bed materials and plasma catalysis) is a promising method to support the NTP-initiated oxidation of air pollutants.
Persistent UFZ Identifier
Roland, U., Holzer, F., Kopinke, F.-D. (2002):
Improved oxidation of air pollutants in a non-thermal plasma
Catal.Today 73 (3-4), 315 - 323