Patent ID: 7199067
Filing Date: 2007-04-03
Classification: B01D,C04B

Abstract:
1. A method for preparing a porous ceramic material, the method comprising: (i) preparing a paste comprising an inorganic portion, an organic binder, a solvent, and a pore-forming agent, wherein the inorganic portion comprises particles having an average diameter of 0.15 μm to 2 μm and wherein the pore-forming agent has a decomposition temperature of 450° C. or less and an average size from 5 to 30 μm and is substantially insoluble in the solvent, and wherein the weight percent of the inorganic portion in the paste is 50 weight percent to 85 weight percent and the weight percent of the pore forming agent in the paste is 5 weight percent to 19 weight percent; (ii) shaping the paste; and (iii) sintering the shape at a sintering temperature that consolidates the shape into a homogeneous bulky porous ceramic material, wherein the homogeneous bulky porous ceramic material has an average pore diameter D50 of 4 μm or less.