SILICA POROUS BODY AND METHOD OF MANUFACTURING THE SAME

摘要

A plate-like or a fiber-like silica porous body having excellent adsorbing performance, not causing the clogging of a filter medium in a solid-liquid separating process after being used as a filter aid, and suitably used as an adsorbing material. The plate-like silica porous body has a length of 5 to 50 mum, a width of 1 to 20 mum, a thickness of 0.05 to 0.5 mum, an aspect ratio of length to thickness of 70 to 300, an average pore diameter of 1 to 20 nm, a total pore volume of 0.1 to 1.5 ml/g, and a BET specific surface of 200 to 500 m<2>/g. The fiber-like silica porous body has a fiber length of 5 to 50 mum, a fiber diameter of 0.05 to 0.5 mum, an aspect ratio of fiber length to fiber diameter of 70 to 300, an average pore diameter of 1 to 20 nm, a total pore volume of 0.1 to 1.5 ml/s, and a BET specific surface of 300 to 800 m<2>/g. These porous bodies are characterized in that the peak of a diffraction angle 2theta is not present near 21° and 26.5° in X-ray diffraction spectrum.