Amorphous silicas

Details Amorphous silicas Amorphous silicas

C - Chemistry, Metallurgy

01

B

252/34, 195/8

C01B 33/193 (2006.01) C01B 33/12 (2006.01) C12H 1/04 (2006.01) C12H 1/044 (2006.01)

Patent

CA 1305694

ABSTRACT An amorphous silica suitable for use as a stabiliser for alcoholic beverages, eg beers, has a pore volume from about 1.6 to 2.5 cc g-1, a mean pore diameter from about 8.5 to 14.0 nm and a surface area of at least 450 m2g-1. The silica may be prepared by a precipitation route in which sodium silicate is mixed with mineral acid in the presence of electrolyte at a temperature of from 20°C to 50°C.

562822

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