Dual pore-structure artificial carbon and graphite

Details Dual pore-structure artificial carbon and graphite Dual pore-structure artificial carbon and graphite

1978-05-08

1980-05-27

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

252422, 252444, 264 291, 423448, 423449, C01B 3102, C01B 3104

Patent

active

042050553

ABSTRACT:
Dual pore-structured carbon and graphite consist essentially of a macroporous agglomeration of strongly bonded microporous grains of carbon or graphite the radii of the macropores therein being from substantially 10 to 350 .mu.m and those of the micropores from substantially 0.2 to 1.0 .mu.m, with the macropores being joined by intercommunicating channels which form a fluid permeable structure. Such carbon or graphite has a density of from 0.70 to 1.50 grams/cc., a permeability to gases of from 20 to 500 cm.sup.2 /sec/atmos and a porosity of from 30 to 50%. Such materials are produced by including in a mixture of tar or pitch and finely divided solid carbonaceous material in suitable proportions, a particulate eliminable non-carbon-forming material having a particle size of 10 to 350 .mu.m, which material is substantially insoluble in said mixture, in a proportion sufficient to secure the desired porosity, shaping and then heating the mixture to effect carbonization and/or graphitization thereof and, after the product has cooled, giving any appropriate after-treatment to eliminate any heat treated residue from said particulate material and leave the desired porous structure.

REFERENCES:
patent: 1037901 (1912-09-01), Hansen
patent: 2814076 (1957-11-01), Gartland
patent: 3338993 (1967-08-01), Juel et al.
patent: 3419645 (1968-12-01), Pietzka et al.
patent: 3642962 (1972-02-01), Wallouch

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