| Titre : | Large-Scale Synthesis of Double-Walled Carbon Nanotubes in Fluidized Beds (2010) |
| Auteurs : | Oscar M. Dunens, Auteur ; Kieran J. MacKenzie, Auteur ; Andrew T. Harris, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 9, Mai 2010) |
| Article en page(s) : | pp. 4031–4035 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Carbon Nanotubes |
| Résumé : | Double-walled carbon nanotubes (DWCNTs) are a unique allotrope of carbon with numerous potential applications including use in electronic and nanomechanical devices. However, existing methods and reaction conditions for DWCNT synthesis are inherently unscaleable, and production is limited to gram per hour quantities. Here, we report the synthesis of well-graphitized DWCNTs using fluidized bed chemical vapor deposition on an alumina-supported iron−molybdenum catalyst. Reaction products were analyzed using thermogravimetric analysis, Raman spectroscopy, and scanning and transmission electron microscopies. At a synthesis temperature of 850 °C and with use of methane as the carbon source, a 278% carbon yield relative to the weight of the metal catalyst was obtained. Carbon products consisted of approximately 75% DWCNTs with a good degree of wall graphitization (IG/ID = 4.85). The production technique and reaction conditions described here are capable of being applied at industrial scale. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie100059q |
