Methane combustion and oxidation of selected volatile organic compounds over perovskite catalysts

Methane combustion and oxidation of selected volatile organic compounds (n-hexane, toluene and acetone) over perovskite monolithic catalysts on metallic supports were tested. Catalysts varied in the active phase composition (LaMnO3 alone or with addition of silver and LaCoO3) and its content in the catalyst. Results of XRD and scanning microscopy analyses of manufactured catalysts are presented. They showed very uniform distribution of perovskite crystals, as well as La, Mn and Ag elements on the surfaces of catalysts. LaCoO3 catalyst showed the highest efficiency in process of methane combustion. The most active catalyst in the oxidation of volatile organic compounds (VOCs) was La0.75Ag0.25MnO3 with the highest silver content (25 atom.%) and with the highest content of active ingredient (27 wt.%).