Process for the production of hollow carbon fiber membranes
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United States of America Patent
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Jul 20, 1999
Grant Date -
N/A
app pub date -
Mar 7, 1995
filing date -
Mar 7, 1994
priority date (Note) -
Expired
status (Latency Note)
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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.
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