MODEL OF IMPROVED ARC GENERATOR FOR FULLERENE PRODUCTION

Citation
Zm. Markovic et al., MODEL OF IMPROVED ARC GENERATOR FOR FULLERENE PRODUCTION, Fullerene science and technology, 5(5), 1997, pp. 903-918
Citations number
19
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical","Material Science
ISSN journal
1064122X
Volume
5
Issue
5
Year of publication
1997
Pages
903 - 918
Database
ISI
SICI code
1064-122X(1997)5:5<903:MOIAGF>2.0.ZU;2-X
Abstract
Process of fullerene formation and fragmentation is studied in various zones of fullerene generator. Fullerenes are produced utilizing carbo n are method, in which graphite electrodes are vaporized in a low pres sure helium atmosphere by passing an electrical current through the el ectrodes. The effects of the gas pressure and intensity of the direct current on fullerene yield are investigated. Maximum fullerene yield o f 8% is found in a raw soot after the evaporation of graphite by a 60 A direct current, in a helium ambient under the pressure of 8 kPa.