Low density microcellular carbon or catalytically impregnated carbon forms and process for their preparation
Patent
·
OSTI ID:866851
- Danville, CA
- Pleasant Hill, CA
Machinable and structurally stable, low density microcellular carbon, and catalytically impregnated carbon, foams, and process for their preparation, are provided. Pulverized sodium chloride is classified to improve particle size uniformity, and the classified particles may be further mixed with a catalyst material. The particles are cold pressed into a compact having internal pores, and then sintered. The sintered compact is immersed and then submerged in a phenolic polymer solution to uniformly fill the pores of the compact with phenolic polymer. The compact is then heated to pyrolyze the phenolic polymer into carbon in the form of a foam. Then the sodium chloride of the compact is leached away with water, and the remaining product is freeze dried to provide the carbon, or catalytically impregnated carbon, foam.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4806290
- OSTI ID:
- 866851
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/264/423/502/
carbon
catalyst
catalyst material
catalytically
catalytically impregnated
chloride
classified
cold
cold pressed
compact
density
density microcellular
dried
fill
foam
foams
form
forms
freeze
heated
immersed
impregnated
impregnated carbon
improve
internal
internal pores
leached
machinable
material
microcellular
microcellular carbon
mixed
particle
particle size
particles
phenolic
polymer
polymer solution
pores
preparation
pressed
process
product
provide
provided
pulverized
pyrolyze
remaining
sintered
sintered compact
size
size uniform
size uniformity
sodium
sodium chloride
solution
stable
structurally
structurally stable
submerged
uniformity
uniformly
water
carbon
catalyst
catalyst material
catalytically
catalytically impregnated
chloride
classified
cold
cold pressed
compact
density
density microcellular
dried
fill
foam
foams
form
forms
freeze
heated
immersed
impregnated
impregnated carbon
improve
internal
internal pores
leached
machinable
material
microcellular
microcellular carbon
mixed
particle
particle size
particles
phenolic
polymer
polymer solution
pores
preparation
pressed
process
product
provide
provided
pulverized
pyrolyze
remaining
sintered
sintered compact
size
size uniform
size uniformity
sodium
sodium chloride
solution
stable
structurally
structurally stable
submerged
uniformity
uniformly
water