Patent ID: 8518333

Claim:
A honeycomb structured body comprising: a plurality of porous ceramic members being bound with one another through a sealing material layer which is formed between peripheries of said porous ceramic members, each of said porous ceramic members having a structure in which a plurality of cells are placed in parallel with one another in a longitudinal direction with a cell wall therebetween; and an oxide catalyst that is supported on at least one portion of said cell wall, wherein said oxide catalyst comprises CeO 2 and ZrO 2 , and the amount of supported oxide catalyst is set to at least about 10 g/L and at most about 50 g/L with respect to the apparent volume of said honeycomb structured body, wherein said porous ceramic members are each made of a material that includes inorganic particles that is extrusion-molded to form a raw molded body of a rectangular pillar shape and fired at at least 1400° C. and at most 2300° C. to form a fired body, and wherein said porous ceramic member has an apparent density of about 0.7 g/cm 3 or less and a porosity of at least about 40% and at most about 60%.