Method of producing carbon nanotubes and catalysts therefor

C - Chemistry – Metallurgy – 01 – B

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C01B 31/02 (2006.01)

Patent

CA 2375887

A catalyst and method for producing carbon nanotubes by contacting a carbon containing gas with metallic catalytic particles. The catalytic particles contain at least one metal from Group VIII, including for example Co, Ni, Ru, Rh, Pd, Ir, and Pt, and at least one metal from Group VIb including for example Mo, W and Cr. The metal component may be deposited on a support. Preferably, a substantial percentage of the nanotubes formed are single-walled carbon nanotubes. Further, a method for determining catalyst composition and reaction conditions for optimizing production of single-walled carbon nanotubes is also disclosed.

La présente invention concerne un catalyseur et un procédé de production de nanotubes de carbone qui consiste à mettre en contact un gaz contenant du carbone avec des particules catalytiques métalliques. Les particules catalytiques contiennent au moins un métal sélectionné dans le groupe VIII, tel que par exemple Co, Ni, Ru, Rh, Pd, Ir, et Pt, et au moins un métal sélectionné dans le groupe VIb tel que par exemple Mo, W et Cr. Le constituant métallique peut être déposé sur un support. De préférence un pourcentage substantiel des nanotubes formés est constitué de nanotubes de carbone à simple paroi. On décrit également un procédé permettant de déterminer la composition du catalyseur et des conditions de réaction qui permettront d'optimiser la production de nanotubes de carbone à simple paroi.

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