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 | Zendy

Steven Corthals | Zendy; Jasper Van Noyen | Zendy; Jan Geboers | Zendy; Tom Vosch | Zendy; Duoduo Liang | Zendy; Xiaoxing Ke | Zendy; Johan Hofkens | Zendy; Gustaaf Van Tendeloo | Zendy; Pierre Jacobs | Zendy; Bert F. Sels | Zendy

Open Access

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

Author(s) -

Steven Corthals,

Jasper Van Noyen,

Jan Geboers,

Tom Vosch,

Duoduo Liang,

Xiaoxing Ke,

Johan Hofkens,

Gustaaf Van Tendeloo,

Pierre Jacobs,

Bert F. Sels

Publication year - 2012

Publication title -

carbon

Language(s) - English

Resource type - Journals

eISSN - 1873-3891

pISSN - 0008-6223

DOI - 10.1016/j.carbon.2011.08.047

Subject(s) - carbon nanofiber , materials science , catalysis , spinel , chemical engineering , chemical vapor deposition , carbon fibers , carbon nanotube , nanofiber , nanotechnology , composite material , organic chemistry , chemistry , composite number , metallurgy , engineering

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.status: publishe

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