Method for preparing single walled carbon nanotubes

D - Textiles – Paper – 01 – F

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D01F 9/12 (2006.01)

Patent

CA 2588111

Methods of preparing single walled carbon nanotubes are provided. Carbon containing gas is contacted with a supported metal catalyst under reaction conditions to yield at least 90% single walled carbon nanotubes and at least 1 gram single walled carbon nanotubes/gram metal catalyst. The support material may be calcined at temperatures between 150 and 600~C, and may have at least one oxidized planar surface. Reaction conditions include less than 10 atmospheres pressure and less than 800~C.

L'invention concerne des procédés pour préparer des nanotubes en carbone à paroi simple. Un gaz contenant du carbone est mis en contact avec un catalyseur métallique supporté dans des conditions de réaction présentant une sélectivité d'au moins 90 % du nombre de nanotubes en carbone à paroi simple et un rendement d'au moins 1 gramme de nanotubes en carbone à paroi simple par gramme de catalyseur métallique. Ledit matériau de support peut être calciné à des températures comprises entre 150 et 600 °C, et peut présenter au moins une surface plane oxydée. La pression, dans les conditions de réaction, est supérieure à 1 atmosphère et inférieure à 10 atmosphères et la température, dans le conditions de réaction, est inférieure à 800 °C.

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