Title: The beneficial effect of CO2 in the low temperature synthesis of high quality carbon nanofibers and thin multiwalled carbon nanotubes from CH4 over Ni catalysts
Authors: Corthals, Steven ×
Van Noyen, Jasper
J.A. Geboers, Jan
Vosch, Tom
Liang, Duoduo
Ke, Xiaoxing
Hofkens, Johan
Van Tendeloo, Gustaaf
Jacobs, Pierre
Sels, Bert #
Issue Date: Feb-2012
Publisher: Pergamon Press
Series Title: Carbon vol:50 issue:2 pages:372-384
Abstract: A low temperature chemical vapor deposition method is described for converting CH4 into high-quality carbon nanofibers (CNFs) using a Ni catalyst supported on either spinel or peroyskite oxides in the presence of CO2. The addition of CO2 has a significant influence on CNF purity and stability, while the CNF diameter distribution is significantly narrowed. Ultimately, the addition of CO2 changes the CNF structure from fishbone fibers to thin multiwalled carbon nanotubes. A new "in situ" cooling principle taking into account dry reforming chemistry and thermodynamics is introduced to account for the structural effects of CO2. (C) 2011 Elsevier Ltd. All rights reserved.
ISSN: 0008-6223
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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