A series of Fe doped LaMnO catalysts were prepared to control the production of byproducts such as O, NO, and CO, during the degradation of volatile organic compounds with a non-thermal plasma. Eliminating these potentially toxic byproducts will make non-thermal plasma technologies applicable for a wider range of commercial applications. The modified LaMnO catalysts are combined in NTP-catalysis reactor with optimal configuration. Experimental results show that doping Fe on LaMnO catalysts can not only enhance the oxidation of o-xylene, but also lower the emission levels of byproducts. LaMnFeO catalyst shows the best catalytic activity among the formulations tested herein. In addition to the strong mineralization of 88.1 %, the catalyst has the highest performance for o-xylene conversion (91.3 %), O inhibition efficiency (84.9 %), and NO inhibition efficiency (61.2 %) due to the strong concentration of active oxygen species on the surface of the catalyst. Moreover, the high reducibility of Fe demonstrated with H-TPR (hydrogen temperature-programed reduction) further enhances the removal of O by oxygen species exchange between Mn/Mn and Fe/Fe.
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