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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 {<=}1,000{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 1,050 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:
372593
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 360601; PA: EDB-96:143927; SN: 96001657242
Patent Number(s):
US 5,556,892/A/
Application Number:
PAN: 8-429,276
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 17 Sep 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FOAMS; CHEMICAL PREPARATION; USES; PHENOLS; CROSS-LINKING; FURFURAL; SOL-GEL PROCESS; POROSITY; PYROLYSIS; THERMAL INSULATION; PACKINGS; FILTERS; ION EXCHANGE MATERIALS; ELECTRODES; ELECTRIC BATTERIES; CAPACITIVE ENERGY STORAGE EQUIPMENT

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