| abstract |
In a porous silica material not containing a metal, porous silica capable of effectively deodorizing odor such as methyl mercaptan, hydrogen sulfide and nonenal which is difficult to deodorize is provided. A porous silica comprising primary-pore-formed particles, wherein the particles include a metal-containing substance having a particle size of 1 to 100 nm, and a porous silica having a specific surface area of 500 m 2 / g or more. |