Method for making monolithic metal oxide aerogels

Patent · Sun Jan 01 04:00:00 EST 1995

OSTI ID:869777

Droege, Michael W ^[1]; Coronado, Paul R ^[1]; Hair, Lucy M ^[1]

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1. Livermore, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5395805
• OSTI ID: 869777
• Country of Publication: United States
• Language: English

Related Subjects

/501/423/516/
advantageous
aerogels
alkoxide
alkoxide solution
catalyst
catalyst solution
colloidal
colloidal solution
contained
containment
containment vessel
cracked
densities
especially
extraction
forming
gas
gas permeable
gelled
hydrolyzed-condensed
metal
metal alkoxide
metal oxide
metal oxides
method
monolithic
monolithic metal
opaque
oxide
oxide aerogels
oxide solution
oxides
permeable
prepared
prepared separately
produced
prone
reacted
resulting
sealed
separately
silica
solution
solvent
supercritical
supercritical extraction
transparent
varying
varying densities
vessel
wet