| abstract |
A catalyst for the oxidation of ammonia, the catalyst comprising a selective catalytic reduction (SCR) catalyst and a composite heterogeneous extruded honeycomb having longitudinally extending parallel channels partially formed by channels having an overall longitudinal length a wall definition, wherein the channel wall comprises a pore structure comprising a periodic arrangement of porous cells embedded in an inorganic matrix component, at least some of the porous cells at least partially composed of particles comprising particles supported on a carrier material An active interface layer is defined on the catalytically active material of the noble metal. |