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

Patent · Mon Jan 01 00:00:00 EST 1996

OSTI ID:870601

Pekala, Richard W ^[1]

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1. Pleasant Hill, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5556892
• OSTI ID: 870601
• Country of Publication: United States
• Language: English

Related Subjects

organic
aerogels
sol-gel
polymerization
phenolic-furfural
mixtures
mixture
dilute
solution
leads
highly
cross-linked
network
supercritically
dried
form
surface
foam
porous
materials
cell
pore
sizes
ltoreq
1000
ang
dark
brown
color
classified
type
aerogel
pyrolyzed
inert
atmosphere
1050
degree
produce
carbon
thermal
insulation
chromatographic
packing
water
filtration
ion-exchange
electrodes
energy
storage
devices
batteries
double-layer
capacitors
organic aerogels
highly cross-linked
carbon electrode
layer capacitors
dilute solution
layer capacitor
thermal insulation
porous material
storage device
energy storage
pore size
inert atmosphere
carbon aerogel
pore sizes
storage devices
sol-gel polymerization
porous materials
carbon aerogels
carbon electrodes
solution leads
water filtration
phenolic-furfural aerogel
phenolic-furfural mixtures
phenolic-furfural mixture
chromatographic packing
supercritically dried
organic aerogel
produce carbon
dark brown
double-layer capacitors
cross-linked network
/521/