| abstract |
The present invention provides spherical microporous silica porous particles using a nontoxic, biodegradable nonionic surfactant and an inexpensive alkali silicate as a silica source. The spherical micropore silica porous particles have micropores having a pore diameter of 2 nm or less in a pore volume of 0.25 ml / g or more, a BET specific surface area of 600 m 2 / g or more, and a BET analysis method. It is composed of spherical particles having a C constant of 450 or more and a particle size of 20 to 500 μm. [Selection diagram] None. |