Method of making a carbon foam material and resultant product

Details Method of making a carbon foam material and resultant product Method of making a carbon foam material and resultant product

1997-07-03

1999-03-30

Lewis, Michael

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423448, C01B 3100

Patent

active

058884696

ABSTRACT:
A method of making anisotropic carbon foam material includes de-ashing and hydrogenating bituminous coal, separating asphaltenes from oils contained in the coke precursor, coking the material to create a carbon foam. In one embodiment of the invention, the carbon foam is subsequently graphitized. The pores within the foam material are preferably generally of equal size. The pore size and carbon foam material density may be controlled by (a) altering the percentage volatiles contained within the asphaltenes to be coked, (b) mixing the asphaltenes with different coking precursors which are isotropic in nature, or (c) modifying the pressure under which coking is effected. In another embodiment of the invention, solvent separation is employed on raw bituminous coal and an isotropic carbon foam is provided. A related carbon foam product is disclosed. The carbon foam materials of the present invention are characterized by having high compressive strength as compared with prior known carbon foam materials.

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