A cyclic catalyst pretreatment in C[O.sub.2] for high yield production of carbon nanofibers with narrow diameter distribution

This paper presents a cyclic catalyst pretreatment process to improve the CNF yield with narrow size distribution by sequentially feeding the CVD reactor with C[H.sub.4]/C[O.sub.2] mixtures (carbon deposition) and C[O.sub.2] (carbon removal) prior to the actual growth process. A mechanism based on a...

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Veröffentlicht in:	Catalysis letters Jg. 141; H. 11; S. 1621 - 1624
Hauptverfasser:	Corthals, Steven, Van Noyen, Jasper, Liang, Duoduo, Ke, Xiaoxing, Van Tendeloo, Gustaaf, Jacobs, Pierre, Sels, Bert
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Springer 01.11.2011
Schlagworte:	Chemical vapor deposition Trucking
ISSN:	1011-372X
Online-Zugang:	Volltext
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Zusammenfassung:	This paper presents a cyclic catalyst pretreatment process to improve the CNF yield with narrow size distribution by sequentially feeding the CVD reactor with C[H.sub.4]/C[O.sub.2] mixtures (carbon deposition) and C[O.sub.2] (carbon removal) prior to the actual growth process. A mechanism based on a break-up of large Ni particles tentatively explains the beneficial effect of the cyclic carbon deposition/removal CVD procedure.
ISSN:	1011-372X
DOI:	10.1007/s10562-011-0690-3