catalytic effect of MnOₓ and CoOₓ on the decomposition of nitrobenzene in a non-thermal plasma reactor

Influence of water vapor on the oxidative decomposition of nitrobenzene in a dielectric barrier discharge (DBD) plasma reactor was investigated, where a sintered metal fibers (SMF) sheet modified with MnOₓ and CoOₓ has been used as the inner electrode. The designed in-plasma catalytic reactor in the...

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Published inChemical engineering journal (Lausanne, Switzerland : 1996) Vol. 180; no. 15; pp. 39 - 45
Main Authors Karuppiah, J, Karvembu, R, Subrahmanyam, Ch
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.01.2012
Subjects
chemical engineering
electrodes
energy
hydroxyl radicals
oxidants
oxidation
ozone
water vapor
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Summary:Influence of water vapor on the oxidative decomposition of nitrobenzene in a dielectric barrier discharge (DBD) plasma reactor was investigated, where a sintered metal fibers (SMF) sheet modified with MnOₓ and CoOₓ has been used as the inner electrode. The designed in-plasma catalytic reactor in the presence of water vapor showed improved conversion and selectivity to total oxidation, which may be due to the formation of a strong oxidant hydroxyl radical. Optimization of various parameters like concentration, flow rate and applied energy has been carried out and it has been observed that CoOₓ supported SMF electrode showed better performance, especially for low concentrations of organic compound. In situ decomposition of ozone on the surface of the transition metal oxide modified SMF may also have favored better performance of the plasma reactor.
Bibliography:http://dx.doi.org/10.1016/j.cej.2011.10.096
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2011.10.096