Patent ID: 8658550

Claim:
An oxide-ceramic forming clay, comprising: an oxide-ceramic forming material; a layered double hydroxide; organic binder; a pore-forming agent; and water, wherein: (i) the amount of the pore-forming agent is between 3 and 50 parts by mass by superaddition to 100 parts by mass of a sum of the oxide-ceramic forming material and the layered double hydroxide, (ii) a sum of the pore-forming agent and an organic binder is between 5 and 55 parts by mass also by superaddition, (iii) the amount of pore-forming agent is larger than the amount of organic binder, (iv) the layered double hydroxide is a layered double hydroxide expressed by the following formula (I): [ M 2+ 1-x M 3+ x (OH) 2 ][A n− x/n .y H 2 O] (I) (in the formula (I), M 2+ , M 3+ , and A n− respectively express bivalent cation, trivalent cation, or anion, n expresses valence of anion and 1≦n≦3, x expresses composition ratio of trivalent cation in a sum of the bivalent cation (M 2+ ) and the trivalent cation (M 3+ ) and at the same time expresses a value within a range of between 0.1 and 0.4, and y expresses number of moles of water), and (v) the oxide-ceramic forming clay has a sheet extrusion pressure that is 20 Mpa or less.