SYSTEM CONSISTING OF A SUBSTRATE WITH FLOW CHANNELS AND A WASH-COAT-FREE CATALYTIC COATING

The invention relates to a system consisting of a substrate with flow channels and at least one catalytically active substance, preferably Pt, Rh or rare earth compounds, the substrate-forming material having a capillary interconnecting porosity and the catalytically active coating being applied to the crystals forming the pores at least in the material porosity, in such a way that the binding of the catalytically active substance is carried out thermally and the coating of the substrate material crystals is carried out without auxiliary wash-coat coatings.