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US 7,071,287 B2Granted
Aerogel metallic compositions
AssigneeAspen Aerogels, Inc.
InventorsWendell Rhine, Jing Wang, Redouane Begag
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AssigneeAspen Aerogels, Inc.
InventorsWendell Rhine, Jing Wang, Redouane Begag
Estimating the term…
A preparation process of polyimide aerogels that composed of aromatic dianhydrides and aromatic diamines or a combined aromatic and aliphatic diamines is described. Also descried is a process to produce carbon aerogels derived from polyimide aerogel composed of a rigid aromatic diamine and an aromatic dianhydride. Finally, the processes to produce carbon aerogels or xerogel-aerogel hybrid, both of which impregnated with highly dispersed transition metal clusters, and metal carbide aerogels, deriving from the polyimide aerogels composed of a rigid aromatic diamine and an aromatic dianhydride, are described. The polyimide aerogels and the polyimide aerogel derivatives consist of interconnecting mesopores with average pore size at 10 to 30 nm and a mono-dispersed pore size distribution. The gel density could be as low as 0.008 g/cc and accessible surface area as high as 1300 m2/g.
A process for producing carbon aerogels impregnated with dispersed metal particles comprising:
A process for producing carbon xerogel-aerogel hybrid impregnated with highly dispersed metal particles, the process comprising the steps of:
A process for producing a metal carbide aerogel, a metal carbide-carbon aerogel or carbon aerogel impregnated with highly dispersed metal particles, the process comprising the steps of:
The process of claim 25, wherein the amino terminated polysiloxane is a thermally stable polysiloxane of the formula
A composite metal-carbon aerogel comprising carbon aerogel domains, comprising carbon and nitrogen, metal carbide domains, or a combination thereof.
An article of manufacture comprising at least one aerogel selected from metal carbide aerogels, hybrid carbon-metal carbide aerogels, each of which may have metal particles dispersed in the pores of the aerogel.
An electrode composed of at least one aerogel selected from metal carbide aerogels, hybrid carbon-metal carbide aerogels, each of which may have metal particles dispersed in the pores of the aerogel.
An electrochemical cell comprising one or more electrodes composed of at least one aerogel selected from metal carbide aerogels, hybrid carbon-metal carbide aerogels, each of which may have metal particles dispersed in the pores of the aerogel.
A supported metal catalyst comprising a metal carbide, or a composite carbon-metal carbide aerogel having metal particles dispersed therein or a metal carbide aerogel.
Dependencies are inferred from the claim text.