Process for the introduction of a catalytic coating in the pores of a ceramic flow - honeycomb body.

摘要

Process for the introduction of a catalytic coating in the pores of a ceramic flow - honeycomb body, which between two end faces of parallel flow channels are passed through the channel walls with an open pore structure are separated from one another, wherein for the coating, a catalyst suspension is used, which in a carrier liquid contains suspended solids,characterized by the steps of,a) contacting of the two end faces of the honeycomb body with a perforated mask with open and closed regions, wherein the hole masks are arranged in such a way that the open regions of the shadow mask on the one end face of the closed areas of the shadow mask on the other end face opposite,b) introducing the catalyst suspension through the perforated mask on the one end face of the honeycomb body to the suspension through the perforated mask on the other end face of the,c) blowing or sucking off any excess catalyst suspension,d) a disengagement of the contact with the hole masks ande) calcination of the coated honeycomb structure.