Gas-phase process for purifying single-wall carbon nanotubes and compositions thereof

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dc.contributor.assigneeRice Universityen_US
dc.contributor.publisherUnited States Patent and Trademark Officeen_US
dc.creatorSmalley, Richard E.en_US
dc.creatorHauge, Robert H.en_US
dc.creatorChiang, Wan-Tingen_US
dc.creatorYang, Yuemeien_US
dc.creatorSmith, Kenneth A.en_US
dc.creatorKittrell, Carter W.en_US
dc.creatorGu, Zhenningen_US
dc.date.accessioned2015-05-04T19:05:42Zen_US
dc.date.available2015-05-04T19:05:42Zen_US
dc.date.filed2002-02-08en_US
dc.date.issued2006-08-15en_US
dc.description.abstractThe present invention relates to an all gas-phase process for the purification of single-wall carbon nanotubes and the purified single-wall carbon nanotube material. Known methods of single-wall carbon nanotube production result in a single-wall carbon nanotube product that contains single-wall carbon nanotubes in addition to impurities including residual metal catalyst particles and amounts of small amorphous carbon sheets that surround the catalyst particles and appear on the sides of the single-wall carbon nanotubes and “ropes” of single-wall carbon nanotubes. The purification process removes the extraneous carbon as well as metal-containing residual catalyst particles. The process comprises oxidation of the single-wall carbon nanotube material, reduction and reaction of a halogen-containing gas with the metal-containing species. The oxidation step may be done dry or in the presence of water vapor. The present invention provides a scalable means for producing high-purity single-wall carbon nanotube material.en_US
dc.digitization.specificationsThis patent information was downloaded from the US Patent and Trademark website (http://www.uspto.gov/) as image-PDFs. The PDFs were OCRed for access purposes.en_US
dc.format.extent13 ppen_US
dc.identifier.citationSmalley, Richard E., Hauge, Robert H., Chiang, Wan-Ting, Yang, Yuemei, Smith, Kenneth A., Kittrell, Carter W. and Gu, Zhenning, "Gas-phase process for purifying single-wall carbon nanotubes and compositions thereof." Patent US7090819B2. issued 2006-08-15. Retrieved from https://hdl.handle.net/1911/79919.en_US
dc.identifier.patentIDUS7090819B2en_US
dc.identifier.urihttps://hdl.handle.net/1911/79919en_US
dc.language.isoengen_US
dc.titleGas-phase process for purifying single-wall carbon nanotubes and compositions thereofen_US
dc.typeUtility patenten_US
dc.type.dcmiTexten_US
dc.type.genrepatentsen_US
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