Silent discharge plasma (SDP) reactors have been used as ozonizers, but ozone cannot act as a strong oxidant for the oxidative decomposition of VOC in nonthermal plasma media. The oxidative decomposition of nonhalogenated VOC is promoted by the synergism of ozone and a metal oxide catalyst. When 100 ppm of benzene in dry air was decomposed in a SDP reactor at 0.72 sec residence time, benzene conversion was 16% with 398 ppm of ozone as byproduct. When this gas was passed through a MnO2 pellet layer, benzene conversion was improved to 71% with no ozone present. Free oxygen atoms and/or some oxenoid species formed on the MnO2 surface were responsible for benzene oxidation. This paper will discuss the applicability of this reaction system and catalytic effects of metal oxides in VOC removal. Original is an abstract.
|Publication status||Published - 2001|
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