Sol-gel process

Details Sol-gel process Sol-gel process

C - Chemistry, Metallurgy

03

B

C03B 19/12 (2006.01) C03C 1/00 (2006.01) C03C 17/06 (2006.01)

Patent

CA 2618752

Sol-gel process comprising preparation of a solution of at least one compound having the formula Xm - M - (OR)n - m addition to the solution of the dopants, hydrolysis of the compound to form the sol, possible addition of an oxide, gelling the sol, recycling the liquid and adjusting the pH-value of the liquid in order to fix the dopants in the aquagel, gel drying and densifying to obtain the glass.

L'invention porte sur un processus d'obtention d'un sol-gel consistant: à préparer une solution d'au moins un composé de formule Xm - M - (OR)n; à ajouter des dopants à la solution; à hydrolyser le composé pour former le sol; à ajouter facultativement un oxyde; à gélifier le sol; à recycler le liquide; à ajuster le pH du liquide de manière à fixer les dopants dans l'aquagel, à sécher le gel; et à densifier le gel pour obtenir le verre.

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