Coating catalyst shaped body, by providing substrate having first end surface, second end surface and flow channels, and introducing suspension and/or solution in flow channels starting from first end surface

摘要

The method comprises: providing a substrate (10) having a first end surface (12), a second end surface (14) and flow channels (16), which pass through the substrate from the first end surface to the second end face; placing the substrate in such a way that the flow channels are aligned in an angle of inclination to vertical; and introducing a suspension and/or solution (40) in the flow channels starting from the first end surface. The flow channels are parallely arranged to each other, where the angle of inclination is 90[deg] and is adjusted in a range of 45-90[deg] or in a range of 70-90[deg] . The method comprises: providing a substrate (10) having a first end surface (12), a second end surface (14) and flow channels (16), which pass through the substrate from the first end surface to the second end face; placing the substrate in such a way that the flow channels are aligned in an angle of inclination to vertical; and introducing a suspension and/or solution (40) in the flow channels starting from the first end surface. The flow channels are parallely arranged to each other, where the angle of inclination is 90[deg] , and is adjusted in a range of 45-90[deg] or in a range of 70-90[deg] . The suspension and/or solution: contains a catalytic active component or a precursor of a catalytic active component; and is introduced in the flow channel over the second end face or up to a filling limit, which is reached between first and the second end face and/or passes transverse or perpendicular to the flow channels. The introducing step is performed by pumping the suspension and/or solution into the flow channels. A counteracting pressure is produced in the flow channels. The suspension and/or solution has a viscosity of greater than 1 Pa seconds. The flow channels are closed at the second end surface. The counteracting pressure is applied to the flow channels coming from or adjacent to the second end surface. A capillary system is arranged before the first end surface and/or adjacent to the first end surface. The method further comprises: deriving an excess suspension and/or solution from the flow channels; drying the coated substrate; calcining the coated substrate at 300-900[deg] C under air, vacuum, protective gas, inert gas or argon; and transferring the precursor of the catalytic active component into the catalytic active component. Element selected from the suspension, the substrate and the flow channels comprises a support material. The support material is an open-pore and/or inorganic support material. The substrate is the element selected from the shaped body with parallel flow channels, a honeycomb body, a cordierite honeycomb, a silicon carbide honeycomb, an aluminum titanate honeycomb and a metal honeycomb. An independent claim is included for a catalyst.