COATED SUBSTRATE AND PROCESS OF PREPARATION THEREOF

摘要

A substantially uniformly coated substrate that may be either metallic or ceramic in nature as well as a process for preparing such coated substrate. The substantially uniformly coated substrate typically comprises a plurality of outlets; a plurality of substrate walls; and a plurality of channels defined by the substrate walls, said channels extending directly or indirectly from at least one outlet; and wherein there are a plurality of openings and/or corrugations and/or tabs in the substrate walls that communicate between adjacent channels, said substrate containing at least one substantially uniform layer of a coating material that may be a non-sorbent, non-catalytic material; a sorbent, non-catalytic material; a catalytic material or a mixture of two or more of the foregoing materials. The process for preparing such coated substrate involves immersing the substrate in a slurry of the desired material or materials, centrifuging the substrate so as to thereby distribute the material or materials as a substantially uniform layer on the substrate and remove any material or materials in excess of that desired to be present on the substrate, and thereafter drying and calcining the coated substrate.