Open AccessExperimental study of physical parameters significant in fullerene synthesis
Author(s) -
Biljana M. Todorović Marković,
Zoran M. Marković,
NS Marinković,
T. Nenadović
Publication year - 2003
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 45
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc0307543t
Subject(s) - fullerene , inert gas , yield (engineering) , carbon fibers , cathode , volumetric flow rate , work (physics) , inert , analytical chemistry (journal) , materials science , temperature gradient , chemistry , thermodynamics , composite material , organic chemistry , composite number , physics , quantum mechanics
In this work, the effect of physical parameters on the yield of fullerene synthesized in a hollow cathode plasma reactor is investigated. The experimental investigations done previously have shown that the fullerene yield depended on technical parameters - the current intensity, inert gas pressure, type of gas and interelectrode gap. The aim of this work was to show that the fullerene yield depends on physical parameters - carbon concentration, carbon flow rate from the interelectrode gap, axial temperature and temperature gradient between the are channel and the chamber walls as well. It was found that fullerene synthesis occurs in an inert heat bath with dimensions determined by the temperature gradient. The lower temperature limit is around 2000 K and the value of the upper limit is the value of the axis temperature which depends on the discharge conditions. The synthesis of fullerenes is more effective if the carbon concentration in the heat bath is large and the carbon flow rate from that zone to colder parts of chamber is small.