| abstract |
The present invention relates to a method for producing a highly porous ceramic layer and to the layer on a metal, ceramic, enamel and / or glass substrate using porous ceramic particles, preferably aluminum oxide, titanium oxide and zirconium oxide, and an inorganic binder system. It is about how to apply. The inorganic binder system comprises at least one ceramic nanoparticle having a particle size of 100 nm or less, preferably 50 nm or less, particularly preferably 25 nm or less, and the solvent is water. The layers produced in this way are suitable for example as self-cleaning catalytically active layers in ovens, combustion engines, etc., or in general for coating a substrate, for example to significantly increase the specific surface relative to the catalyst substrate. |