Stabilized silica gel and process for making same
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United States of America Patent
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Jun 17, 1986
Grant Date -
N/A
app pub date -
Mar 22, 1985
filing date -
Mar 22, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is provided an improved process for producing a silica gel having improved pore volume relative to conventional silica gels which comprises the steps of gelling an aqueous alkali metal silicate with an aqueous acid, washing the resulting gel to remove salt or salts and acid, and soaking the gel in an aqueous solution of a water soluble aluminum salt to impart from 0.1% to 0.7% by weight aluminum on the dry basis to said gel, drying and reducing the particle size of the dried gel to from 2.0 to 15 microns, said particles having a pore volume in the range of 1.25 to 2.25 cm.sup.3 /gram. and a product produced by said process.
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