Pitch-based activated carbon fiber

Details Pitch-based activated carbon fiber Pitch-based activated carbon fiber

1995-02-07

1998-08-18

Lewis, Michael

Catalyst, solid sorbent, or support therefor: product or process

Solid sorbent

Free carbon containing

4234472, B01J 2002

Patent

active

057958432

ABSTRACT:
There is provided an optically isotropic pitch-based activated carbon fiber which comprises having a large number of pores each with a radius of 0.15 to 2.5 nm and having a specific surface area of 500 m.sup.2 /g or more, the pores being distributed uniformly in both the surface layer part and the inner part of the fiber and allowed to three-dimensionally communicate with each other at least partially.
The above activated carbon fiber is prepared by adjusting the size and density of the pores in the fiber by controlling the conditions for preparing the optically isotropic pitch, spinning the pitch and/or activation of the infusibilized or carbonized pitch-based fiber.
The activated carbon fiber thus obtained is enhanced in adsorption efficiency without decrease in mechanical strength thereof and is widely used for a variety products in accordance with the kind of the substances to be adsorbed.

REFERENCES:
patent: Re29101 (1977-01-01), Amagi et al.
patent: 4734394 (1988-03-01), Kosaka et al.
patent: 5047292 (1991-09-01), Sadanobu et al.
patent: 5446005 (1995-08-01), Endo
Chemical Abstracts, AN 140500v, vol. 106, No. 18, May 1987, p. 127, & JP-A-61 295 218, Dec. 26, 1986, N. Shinto, et al., "Fibrous Activated Carbon".
Journal of Materials Science vol. 23 (1988) 598-605, Morinobu Endo.

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