MESOPOROUS BODY AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To obtain a porous body with porous pore walls, which has a peak at the diffraction angle corresponding to a specified d-value in a X-ray diffraction pattern by condensing and polymerizing an inorg. skeleton component and/or an inorg./org. composite skeleton component in the reaction system having less than a specified concn. of a nonionic surfactant. SOLUTION: The concn. of a nonionic surfactant is preferably <29.67 g/l. The mesoporous material shows one or more peaks at the diffraction angles corresponding to the d-value over 1 nm in a X-ray diffraction pattern. An inorg. skeleton component such as an alkoxysilane which forms a silicate skeleton and a polyethylene oxide-based nonionic surfactant as a template are mixed in a solvent such as water with the pH controlled to <=0.5 to condensate and polymerize them at 35 to 80 deg.C. The molar ratio of the skeleton component: surfactant:hydrochloric acid:solvent is preferably (0.042 to 0.175):(0.00073 to 0.030):1:27.79. The obtd. mesoporous body has >=2 nm center pore diameter and has >=60% of the whole pore volume in the pores of diameters within±40% of the center pore diameter.