Method for producing inorganic porous material
AssigneeTokuyama Corporation
InventorsRyoji Takahashi, Satoshi Sato, Akiyuki Yachi
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Abstract
A process for producing an inorganic porous material, comprising the steps of preparing an aqueous medium solution containing water-glass as a silica source, a water-soluble polymer and an acid, causing phase separation and gelation in the solution at the same time to form a wet gel, and washing and drying the gel. According to the present invention, use of water-glass which is easily acquired as a silica source makes it possible to produce porous silica having mutually continuous through holes with macro-pores. According to the present invention, the diameter of each macro-pore can be controlled to a desired value.
Claims8
A process for producing an inorganic porous material, comprising the steps of:
- preparing an aqueous medium solution of pH 0 to 4 containing water-glass as a silica source, a water-soluble polymer and an acid, therefore
- causing phase separation and gelation in the aqueous solution;
- forming a wet gel from the solution;
- washing the gel;
- and
- drying it.
Dependencies are inferred from the claim text.