| 摘要 |
PURPOSE:To obtain a new silica gel having a high specific surface area and a controlled high structural property and useful as an adsorbent for low molecular organic compounds, a separator for chromatography, a filtering material for beers, etc. CONSTITUTION:A silica gel has a BET specific surface area of 700-1100m<2>/g, a pore volume of 0.5-2.5cc/g, a pore diameter of 20-50Angstrom in the pores occupying 90% of the pore volume, and a relation: AXB>=25000 wherein A (m<2>/g) is the BET specific surface area and B (Angstrom ) is the median pore diameter.
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