Process for preparing porous spherical silica xerogels

Details Process for preparing porous spherical silica xerogels Process for preparing porous spherical silica xerogels

1996-04-08

2000-08-15

Griffin, Steven P.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423339, C01B 3312

Patent

active

061032093

ABSTRACT:
Process for preparing porous spherical silica particles substantially consisting in emulsifying an acidic silica sol in a dispersing media, gelifying the microdrops of the sol in the emulsified state and submitting the resulting gel to thermal treatment in the presence of the emulsifier liquid and of sol gelation base.

REFERENCES:
patent: 5011669 (1991-04-01), Tsuchiya et al.
patent: 5250096 (1993-10-01), Bruce et al.
patent: 5304364 (1994-04-01), Costa et al.
Patent Abstracts of Japan, vol. 12, No.316, Aug. 26, 1988 (JP 63085012 abstract).
Database WPI, Week 8902, Derwent Publications Ltd., London, GB (JP 63291807).

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