Hydrothermal process for preparing a unimodal large pore silica

Details Hydrothermal process for preparing a unimodal large pore silica Hydrothermal process for preparing a unimodal large pore silica

1998-12-21

1999-11-02

Marcantoni, Paul

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423337, C01B 3312

Patent

active

059764791

ABSTRACT:
A hydrothermal process for preparing a modified amorphous silica has been prepared. The process involves mixing a slurry of a silica with a mineralizer such as sodium hydroxide or sodium carbonate at a temperature of about 85.degree. C. to about 300.degree. C. for a time of about 4 hours to about 10 days. The silica thus produced has a unimodal pore distribution with pores in the range of about 300 .ANG. to about 25,000 .ANG..

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patent: 5202104 (1993-04-01), Watanabe et al.
patent: 5354548 (1994-10-01), Araya et al.

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