INFLUENCE OF THE COMPOSITION OF CARRIERS BASED ON ZrO2 AND Al2O3 ON THE PROPERTIES OF COBALTCONTAINING CATALYSTS ON THE SELECTIVE REDUCTION OF NO WITH METHANE

A series of cobalt-containing granulated and structured catalysts based on zirconium and aluminum oxides has been studied. The optimum composition of binary oxide samples (80% ZrO2 – 20% Al2O3) for the selective reduction of nitrogen monoxide with methane (84% conversion of NO achieved at 320 °C) has been determined. The activity of the structured catalysts depends on both the composition of the secondary carrier (ZrO2, Al2 O3, and their mixture) and on the nature of the skeleton of the cellular structure (cordierite, kaolin–aerosil).