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Vapor-grown carbon fibers from benzene pyrolysis

โœ Scribed by Mahalingam Jayasankar; Ramesh Chand; santosh K. Gupta; D. Kunzru

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
616 KB
Volume
33
Category
Article
ISSN
0008-6223

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โœฆ Synopsis

Carbon fibers were grown on alumina substrates by vapor phase decomposition of benzene in the presence of hydrogen in a tubular reactor. The effect of lengthening duration and temperature on the average fiber length was studied at two different benzene concentrations (13.2 and 18.6 mol%). In the temperature range (1283-1353 K) investigated, the maximum average fiber length increased with an increase in temperature.

At a constant temperature, the average fiber length initially increased with duration of lengthening, and finally reached an asymptotic value. The fiber lengths were unaffected by thickening. A two-parameter model can satisfactorily explain the observed variation in average fiber length with duration of lengthening.

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