Pyrolysis process for making fullerenes

Details Pyrolysis process for making fullerenes Pyrolysis process for making fullerenes

1998-04-10

2000-07-04

Griffin, Steven P.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423445R, 585636, C01B 3102

Patent

active

060834692

ABSTRACT:
Solid fullerite, comprising a mixture of C.sub.60 and C.sub.70 fullerenes and higher molecular weight carbon nanotropes, is produced by high temperature, short residence time, pyrolysis of a mixture of hydrocarbons, containing at least two "but less than six" carbon atoms in their molecular structures, admixed with an inert gas comprising at least one member of the Group VIII-A elements of The Periodic Table of The Elements in a substantially reduced-metals free reactor comprised of a thermally stable ceramic or pyrolytic graphite.

REFERENCES:
patent: 5227038 (1993-07-01), Smalley
patent: 5259856 (1993-11-01), Ohga
patent: 5395496 (1995-03-01), Tsantrizos
patent: 5876684 (1999-03-01), Withers
Holland, L.R. "Continuous Production of Fullerenes by Pyrolysis of Acetylene at a Glassy Carbon Surface", Carbon, vol. 36, #12, pp. 1725-1727, Dec. 1998.
Vogtle, F. "Fullerenes by Pyrolysis of Hydrocarbons . . . " Tetrahedron, vol. 52, #14, pp. 4949-4962, 1996.

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