Low density microcellular carbon or catalytically impregnated carbon forms and process for their preparation
Abstract
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.
- Inventors:
-
- Danville, CA
- Pleasant Hill, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 866851
- Patent Number(s):
- 4806290
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- density; microcellular; carbon; catalytically; impregnated; forms; process; preparation; machinable; structurally; stable; foams; provided; pulverized; sodium; chloride; classified; improve; particle; size; uniformity; particles; mixed; catalyst; material; cold; pressed; compact; internal; pores; sintered; immersed; submerged; phenolic; polymer; solution; uniformly; fill; heated; pyrolyze; form; foam; leached; water; remaining; product; freeze; dried; provide; catalytically impregnated; cold pressed; impregnated carbon; structurally stable; sintered compact; density microcellular; catalyst material; sodium chloride; microcellular carbon; particle size; polymer solution; size uniformity; internal pores; size uniform; /264/423/502/
Citation Formats
Hopper, Robert W, and Pekala, Richard W. Low density microcellular carbon or catalytically impregnated carbon forms and process for their preparation. United States: N. p., 1989.
Web.
Hopper, Robert W, & Pekala, Richard W. Low density microcellular carbon or catalytically impregnated carbon forms and process for their preparation. United States.
Hopper, Robert W, and Pekala, Richard W. Sun .
"Low density microcellular carbon or catalytically impregnated carbon forms and process for their preparation". United States. https://www.osti.gov/servlets/purl/866851.
@article{osti_866851,
title = {Low density microcellular carbon or catalytically impregnated carbon forms and process for their preparation},
author = {Hopper, Robert W and Pekala, Richard W},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}