Catalyst and method of making the same

Abstract

A method of forming a catalytic article includes the steps of contacting a substrate with a coating solution of an alkali aluminate for a period of time sufficient to form a film of alumina on the substrate; forming a slurry of a catalytic material, a particulate calcined alumina and a liquid carrier; contacting the film of alumina with the slurry so as to coat the alumina film with the slurry; and then calcining the slurry coated alumina film to form the catalytic article. A binder is preferably used in the slurry and the preferred catalytic material useful in the method includes those from group VIII of the Periodic Table of Elements.