Hydrothermal treatment of silica

Details Hydrothermal treatment of silica Hydrothermal treatment of silica

1977-11-14

1979-08-28

Crasanakis, George

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252455R, 252459, B01J 2108, B01J 2112

Patent

active

041660471

ABSTRACT:
A process is disclosed for suppressing the increase in specific average pore diameter which often occurs when a silica is subjected to a hydrothermal treatment, which includes the presence of one or more compounds of the elements lithium, potassium, sodium, rubidium, cesium, strontium or barium and which also includes in the hydrothermal treatment an added amount of at least one water-soluble titanium compound in an amount of about 0.1-5 grams per 100 grams of silica.

REFERENCES:
patent: 3404097 (1968-10-01), Wilson, Jr. et al.
patent: 3637529 (1972-01-01), Van Beek et al.
patent: 3843341 (1974-10-01), Hammel et al.
patent: 3849338 (1974-11-01), Daumas et al.
patent: 3898182 (1975-08-01), Brown et al.
patent: 3969274 (1976-07-01), Frampton
patent: 3996162 (1976-12-01), McCall
patent: 4035261 (1977-07-01), Hargrove et al.

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