Plasma and catalyst for the oxidation of NOx

I. Jögi, K. Erme, E. Levoll, J. Raud, Eugen Stamate

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Abstract

The removal of NOx from the exhaust gases requires the oxidation of most abundant NO to NO2 or N2O5. The oxidation can be done by non-thermal plasma but the efficiency is limited due to the back-reaction of NO2 to NO by O radicals. Present contribution investigates the role of catalysts in the improvement of oxidation efficiency based on the stationary and time-dependent studies of the NOx oxidation at different reactor configurations and experimental conditions. The plasma produced active oxygen species (O, O3) were shown to play an important role in the reactions taking place on the catalyst surfaces while the exact mechanism and extent of the effect depended on the reactor configuration. The effect of catalyst at different experimental conditions was quantitatively described with the aid of analytical lumped kinetic models derived for the NOx oxidation when the catalyst was directly in contact with plasma or only with the ozone.
Original languageEnglish
Title of host publicationProceedings of the XXXIII International Conference on Phenomena in Ionized Gases (ICPIG 2017)
PublisherInstituto de Plasmas e Fusão Nuclear
Publication date2017
Pages32
Publication statusPublished - 2017
Event33rd International Conference on Phenomena in Ionized Gases (ICPIG 2017) - Estoril, Portugal
Duration: 9 Jul 201714 Jul 2017
Conference number: 33
http://icpig2017.tecnico.ulisboa.pt/

Conference

Conference33rd International Conference on Phenomena in Ionized Gases (ICPIG 2017)
Number33
CountryPortugal
CityEstoril
Period09/07/201714/07/2017
Internet address

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