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Title: Method for making monolithic metal oxide aerogels

Transparent, monolithic metal oxide aerogels of varying densities are produced using a method in which a metal alkoxide solution and a catalyst solution are prepared separately and reacted. The resulting hydrolyzed-condensed colloidal solution is gelled, and the wet gel is contained within a sealed, but gas permeable, containment vessel during supercritical extraction of the solvent. The present invention is especially advantageous for making metal oxides other than silica that are prone to forming opaque, cracked aerogels.
 [1];  [1];  [1]
  1. (Livermore, CA)
Issue Date:
OSTI Identifier:
Regents of University of California (Oakland, CA) LLNL
Patent Number(s):
US 5395805
Contract Number:
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
method; monolithic; metal; oxide; aerogels; transparent; varying; densities; produced; alkoxide; solution; catalyst; prepared; separately; reacted; resulting; hydrolyzed-condensed; colloidal; gelled; wet; contained; sealed; gas; permeable; containment; vessel; supercritical; extraction; solvent; especially; advantageous; oxides; silica; prone; forming; opaque; cracked; oxide aerogels; metal alkoxide; supercritical extraction; containment vessel; metal oxide; metal oxides; gas permeable; varying densities; colloidal solution; monolithic metal; alkoxide solution; catalyst solution; oxide solution; prepared separately; /501/423/516/