Differences between carbon nanofibers produced using Fe and Ni catalysts in a floating catalyst reactor

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Title: Differences between carbon nanofibers produced using Fe and Ni catalysts in a floating catalyst reactor
Authors: Martín Gullón, Ignacio | Vera Agulló, José | Conesa, Juan A. | González, José L. | Merino Sánchez, César
Research Group/s: Residuos, Pirólisis y Combustión
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Keywords: Carbon nanofibers | Chemical vapor deposition | Transmission electron microscopy | Microstructure
Knowledge Area: Ingeniería Química
Issue Date: Jul-2006
Publisher: Elsevier
Citation: MARTÍN GULLÓN, Ignacio, et al. "Differences between carbon nanofibers produced using Fe and Ni catalysts in a floating catalyst reactor". Carbon. Vol. 44, Issue 8 (July 2006). ISSN 0008-6223, pp. 1572-1580
Abstract: Carbon nanofibers were produced by the catalytic CVD process by the floating catalyst method, in semi-industrial systems at temperatures above 1350 K. Iron-derived carbon nanofibers were produced from natural gas and xylene, using ferrocene as catalyst source, yielding a thickened submicron vapor grown carbon fibers with a core of multi-wall nanotubes. For the production of Ni derived nanofibers, natural gas was used as the carbon feedstock, and the Ni was added in a nickel compound solution. When no sulfur is used, only soot was obtained, but when sulfur is added to the reactive feedstock, a highly graphitic and very nice stacked-cup-type nanofibers with no free-CVD thickened layer were produced. TEM-EDS analysis confirms that this type of stacked-cup carbon nanofiber is produced only with a partially molten catalyst and methane as hydrocarbon source. In fact, very few fibers have either a particle tip at the end or trapped metal particle inside the wide hollow core of this type of produced carbon material.
URI: http://hdl.handle.net/10045/2282
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2005.12.027
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.carbon.2005.12.027
Appears in Collections:INV - REMAN - Artículos de Revistas

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