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Method for the formation of aerogel precursor using rapid gelation two-step catalysis

  • US 6,764,667 B1
  • Filed: 03/08/2002
  • Issued: 07/20/2004
  • Est. Priority Date: 03/09/2001
  • Status: Active Grant
First Claim
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1. A method for forming aerogel comprising the steps of:

  • a) providing an amount of an alkoxide;

    b) providing an amount of a first organic solvent;

    c) providing an amount of a catalyst;

    d) mixing the alkoxide, solvent and first amount of the catalyst to form a solution in which the alkoxide is precondensed, possibly adding further amounts of catalyst over a period of time (optional);

    e) providing a second amount of the catalyst;

    f) mixing the second amount of the catalyst with the solution to form an alcogel; and

    g) supercritically drying the alcogel to form an aerogel.

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