Honeycomb structured body

A method of manufacturing a honeycomb structured body, comprising:

• combining a plurality of porous ceramic members with one another through an adhesive layer to form a ceramic block, wherein each porous ceramic member has a plurality of cells placed parallel to each other in a longitudinal direction of the porous ceramic member with a wall portion therebetween and either end of the cell is sealed;
• obtaining a first pore volume of pores in the porous ceramic member having a pore diameter of 10 μm or less;
• obtaining an entire pore volume of the porous ceramic member;
• obtaining a ratio X1 (%) by dividing the first pore volume with the entire pore volume;
• obtaining a porosity Y1 (%) of the porous ceramic member;
• applying a catalyst supporting layer on the porous ceramic member at a weight of Z1 (g/l),
• wherein the values of X1, Y1, and Z1 satisfy the following expressions:
• X1≦20−Z1/10,
• Y1≧35+7Z1/40, and
• about 20≦Z1≦about 150.