Patent ID: 8471140

Claim:
A porous silica precursor composition consisting of an organic silane represented by the following chemical formula 1: R 1 m (R 2 —O) 4-m Si (in the formula, R 1 and R 2 may be the same or different and each represent an alkyl group, and m is an integer ranging from 0 to 3); water; an alcohol; a quaternary ammonium compound represented by the following chemical formula 2: R 3 N(R 4 ) 3 X (in the formula, R 3 and R 4 may be the same or different and each represent an alkyl group and X represents a halogen atom); and a hydrophobic substance consisting of disilazane compounds carrying an alkyl group and siloxane compounds carrying an alkyl group, wherein the composition is free of any acid or alkali serving as a catalyst.