Verfahren zur Herstellung einer katalytisch wirksamen Schicht

摘要

A catalytically active layer is prepared by making a dispersion (I) from a nanopowder, a dispersant and hydroxyethylcellulose (HEC); coating a molded support with (I); drying to remove the dispersant; impregnation with a solution of a compound (II) of a catalytically active metal and drying to remove the solvent; sintering to remove the HEC; and optional reduction to reduce (II) to the metal. An Independent claim is also included for a process in which the first three steps are followed by sintering to remove HEC, impregnation with (II) solution and drying and calcination or reduction to convert (II) to the catalytically active form.