MnCu Catalyst Deposited on Metallic Monoliths for Total Oxidation of Volatile Organic Compounds

Abstract

The MnCu mixed catalyst with a Mn:Cu = 9:1 molar ratio prepared by coprecipitation method was deposited by washcoating on a FeCrAlloy monolith (FMW). On the other hand, an anodized aluminum monolith was impregnated with an aqueous solution of manganese and copper acetates in Mn:Cu = 9:1 molar ratio (AM-2IS). The structured catalysts were evaluated in volatile organic compounds (VOCs) combustion. The effects of the deposition methods used and the nature of the structured supports on the catalytic activity were observed. The FM-W monolithic catalyst and the Mn9Cu1 powder catalyst showed the same catalytic behavior for the combustion of all VOCs tested. The influence of the nature of structured support was not observed. The AM-2IS monolithic catalyst showed a slightly higher catalytic activity in most of the tested molecules, than FM-W catalyst. The effect of the substitution of orbital stirring by recirculation during the impregnation process on the loading of the deposited phase, and its effect on the catalytic activity were observed.