Patent ID: 8518852

Claim:
A method of producing a catalyst base material, the method comprising: (a) providing a catalytic base material slurry or paste, wherein the catalytic base material slurry or paste comprises: (i) a hydrophilic polymer coagulant which has a particle size of 20 to 50 μm and is able to absorb water to form swollen gel-like particles; (ii) a water soluble thickener; (iii) a colloidal inorganic binder; (iv) an inorganic fiber; (b) supporting the catalytic slurry or paste on a metal, net-like substrate such that the meshes of the metal, net-like substrate are filled up with the slurry or paste; and (c) drying and/or calcinating the substrate; wherein the slurry or paste comprises from 0.1 to 2% by weight of the hydrophilic polymer coagulant.