Method of making sol-gel monoliths

Details Method of making sol-gel monoliths Method of making sol-gel monoliths

C - Chemistry, Metallurgy

03

B

C03B 37/016 (2006.01) C03B 19/12 (2006.01) C04B 35/14 (2006.01) C04B 35/624 (2006.01)

Patent

CA 2088500

2088500 9202467 PCTABS00010 A method of making a sol-gel monolith, comprising the steps of: a) hydrolyzing and polycondensing one or more oxide percursors to form a sol comprising a plurality of oxide particles suspended in a liquid; b) casting said sol into a mold; c) gelling said sol by cross-linking said oxide particles to form a gel; d) aging said gel to form an aged gel; e) subjecting said aged gel to a drying treatment comprising the steps of: i) heating said aged gel in a high humidity environment; and then ii) heating said aged gel in a low humidity environment to remove liquid from the pores of the aged gel to form a dried, aged gel; and f) densifying said dried, aged gel to form a sol-gel monolith.

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