Sol-gel process utilizing reduced mixing temperatures

Details Sol-gel process utilizing reduced mixing temperatures Sol-gel process utilizing reduced mixing temperatures

2005-04-26

2005-04-26

Metzmaier, Daniel S. (Department: 1712)

Colloid systems and wetting agents; subcombinations thereof; pro

Continuous or semicontinuous solid phase

The solid phase contains silica

C065S395000, C065S017200, C501S012000, C423S338000, C428S312600

Reexamination Certificate

active

06884822

ABSTRACT:
A method of manufacturing a xerogel monolith having a pore diameter distribution includes preparing a first solution comprising metal alkoxide and preparing a second solution comprising a catalyst. A third solution is prepared by mixing the first solution and the second solution together. At least one of the first, second, and third solutions is cooled to achieve a mixture temperature for the third solution which is substantially below room temperature, wherein the third solution has a significantly longer gelation time at the mixture temperature as compared to a room temperature gelation time for the third solution. The method further includes allowing the third solution to gel, thereby forming a wet gel monolith. The method further includes forming the xerogel monolith by drying the wet gel monolith.

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