| abstract |
PROBLEM TO BE SOLVED: To provide a thin plate-like or fibrous silica porous body suitable as an adsorbent which has excellent adsorption performance and does not cause clogging of a filter medium in a solid-liquid separation step after use. SOLUTION: A thin plate-like silica porous body has a length of 5 to 50 μm, a width of 1 to 20 μm, a thickness of 0.05 to 0.5 μm, an aspect ratio of length to thickness of 100 to 300, an average pore diameter of 1 to 20 nm, It has a total pore volume of 0.1 to 1.5 ml / g, a BET specific surface area of 200 to 500 m 2 / g, and a fibrous silica porous body having a fiber length of 5 to 50 μm, a fiber diameter of 0.05 to 0.5 μm, X-ray diffraction spectrum having an aspect ratio of fiber length to fiber diameter of 100 to 300, average pore diameter of 1 to 20 nm, total pore volume of 0.1 to 1.5 ml / g, BET specific surface area of 300 to 800 m 2 / g , It is assumed that there is no 2θ peak around 21 ° and around 26.5 °. [Selection figure] None |