Pitch-based activated carbon fiber

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

1993-06-22

1995-08-29

McFarlane, Anthony

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

Solid sorbent

Free carbon containing

502416, 502430, 4234472, 4234476, B01J 2020

Patent

active

054460050

ABSTRACT:
There is disclosed an optically isotropic pitch-based activated carbon fiber which has a proportion of the number of ultramicropores with a pore diameter of 0.5 nm or smaller to the total number of pores with a pore diameter of 4 nm or smaller being at least 70%; a specific surface area of 500 to 3000 m.sup.2 /g; and the pores consisting substantially only of the pores with a pore diameter of 4 nm or smaller, which are allowed to three-dimentionally communicate with at least a part of the surrounding pores and are distributed with an almost uniform density throughout the fiber including the surface layer part and the inner part of the fiber. The above activated carbon fiber has a high adsorption efficiency without decrease in mechanical strength and is effectively utilized as adsorbents for low molecular organic compounds and inorganic compounds, adsorbents for trace amounts of radioactive substances, catalyst carriers, electrodes for secondary batteries, etc.

REFERENCES:
patent: 4412937 (1983-11-01), Ikegami et al.
patent: 4734394 (1988-03-01), Kosaka et al.
patent: 5238672 (1993-08-01), Sumner et al.
WPI/Derwent, AN-92-196315, JP-A-4 126 825, Apr. 27, 1992.

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