Method for rapid production of large sol-gel SiO.sub.2 containin

Details Method for rapid production of large sol-gel SiO.sub.2 containin Method for rapid production of large sol-gel SiO.sub.2 containin

1990-08-16

1993-03-23

Lovering, Richard D.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

25231501, 2523156, 252582, 501 72, B01J 1300, C03C 300, C03C 3078

Patent

active

051963825

ABSTRACT:
A process for producing sol-gel monoliths containing SiO.sub.2 by mixing water, a SiO.sub.2 precursor and ketomalonic acid to form a sol, gelling the sol, aging the gelled sol and drying the aged gelled sol. Optional additional ingredients that may be added in the mixing step include salts of non-precipitating transition metals such as copper and/or additional precursors such as precursors for B.sub.2 O.sub.3, Na.sub.2 O, Li.sub.2 O, TiO.sub.2, Al.sub.2 O.sub.3 or mixtures thereof.

REFERENCES:
patent: 2281810 (1942-05-01), Stone et al.
patent: 3148073 (1964-09-01), Smith et al.
patent: 3640093 (1972-02-01), Levene et al.
patent: 4286024 (1981-08-01), Yoldas
The Chemistry Of Carboxylic Acids And Esters, Edited By S. Patai, Interscience Publishers, (1969), p. 597.

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