DECOMPOSITION OF OZONE USING CARBON-SUPPORTED METAL-OXIDE CATALYSTS

Ozone decomposition was investigated over a series of activated carbon -supported oxide catalysts deposited on cordierite foam substrates. Em phasis was placed on the study of binary oxide combinations formed fro m MnO2, Co3O4, Fe2O3 and NiO, the most active transition-metal single oxides for the reaction. The MnO2-Fe2O3 system showed the highest ozon e decomposition activity. Laser Raman results under ambient and dehydr ated conditions suggested an interaction between MnO2 and Fe2O3. The i ntroduction of organic and inorganic binders increased both the physic al stability and activity of the catalysts. (C) 1997 Elsevier Science B.V.