Organic aerogels from the sol-gel polymerization of phenolic-fur

Details Organic aerogels from the sol-gel polymerization of phenolic-fur Organic aerogels from the sol-gel polymerization of phenolic-fur

1994-09-16

1995-12-19

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 64, 521181, C08J 928

Patent

active

054768780

ABSTRACT:
The sol-gel polymerization of a phenolic-furfural mixture in dilute solution leads to a highly cross-linked network that can be supercritically dried to form a high surface area foam. These porous materials have cell/pore sizes.ltoreq.1000.ANG., and although they are dark brown in color, they can be classified as a new type of aerogel. The phenolic-furfural aerogel can be pyrolyzed in an inert atmosphere at 1050.degree. C. to produce carbon aerogels. This new aerogel may be used for thermal insulation, chromatographic packing, water filtration, ion-exchange, and carbon electrodes for energy storage devices, such as batteries and double-layer capacitors.

REFERENCES:
patent: 4806290 (1989-02-01), Hopper et al.
patent: 4873218 (1989-10-01), Pekala
patent: 4997804 (1991-03-01), Pekala
patent: 5086085 (1992-02-01), Pekala
patent: 5252620 (1993-10-01), Elliott, Jr. et al.
patent: 5260855 (1993-11-01), Kaschmitter et al.

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