Process for the production of hollow carbon fiber membranes

Details Process for the production of hollow carbon fiber membranes Process for the production of hollow carbon fiber membranes

1995-03-07

1999-07-20

Lewis, Michael

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

Solid sorbent

Free carbon containing

4234479, 423445R, 502423, B01J 2002

Patent

active

059255919

ABSTRACT:
A process for manufacturing a bundle of hollow carbon membranes comprising the steps of: (a) providing a bundle of hollow cellulose fibers; (b) removing substantially all the absorbed water from the said fibers; (c) heating the fibers to a range of temperatures where it pyrolyzes; (d) supplying to the said fibers, during at least part of the heating thereof and after the water has been removed, a catalytically effective amount of a gaseous catalyst selected from among Lewis acids, and ionic salts that are at least partially volatile at the pyrolysis temperature range.

REFERENCES:
patent: 4412675 (1983-11-01), Kawakubo
patent: 4425256 (1984-01-01), Pilipski
patent: 5156831 (1992-10-01), Fain et al.

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