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Title: Organic aerogels from the sol-gel polymerization of phenolic-furfural mixtures

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{<=}1000{angstrom}, 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 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. 8 figs.
Inventors:
Issue Date:
OSTI Identifier:
170453
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 360601; 250903; 250400; PA: EDB-96:028246; SN: 96001517614
Patent Number(s):
US 5,476,878/A/
Application Number:
PAN: 8-307,219
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 19 Dec 1995
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; PHENOLS; POLYMERIZATION; FURFURAL; FOAMS; PRODUCTION; USES; CAPACITIVE ENERGY STORAGE EQUIPMENT; ELECTRODES; ELECTRIC BATTERIES; SOL-GEL PROCESS; PORE STRUCTURE; PYROLYSIS; FILTERS; PACKINGS; ION EXCHANGE MATERIALS