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

1995-04-25

1996-09-17

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 61, 521 64, 521180, C08J 928

Patent

active

055568920

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: 4873218 (1989-10-01), Pekala
patent: 5081163 (1992-01-01), Pekala
patent: 5086085 (1992-02-01), Pekala
patent: 5484818 (1996-01-01), De Vos

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