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US Patent 6333016 - Method of producing carbon nanotubes

US Patent Issued on December 25, 2001
Estimated Patent Expiration Date: Icon_subject September 3, 2019Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

A 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.

Other References

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  • Cheng et al.; "Large-Scale and Low-Cost Synthesis of Single-Walled Carbon Nanotubes by the Catalytic Pyrolysis of Hydrocarbons," Applied Physics Letters, 72(25):3282-3284, Jun. 25, 1998
  • Cheng et al.; "Bulk Morphology and Diameter Distribution of Single-Walled Carbon Nanotubes Synthesized by Catalytic Decomposition of Hydrocarbons," Chemical Physics Letters, 289:602-610, 1998
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  • "Unique Slough Resistant SR™ Series ESD Thermoplastic Product Line Offers Reduced Particle Contamination For Demanding Electronic Applications," "Conductive Plastics," and "Hyperion Graphite Fibrils™", Hyperion Catalysis International Website; http://www.fibrils.com/esd.ht

Inventors

Assignee

Application

No. 389553 filed on 09/03/1999

US Classes:

423/447.3, From gaseous reactants423/445B, Fullerene (e.g., C60, C70, etc.)423/447.1Fiber, fabric, or textile

Field of Search

423/445B, Fullerene (e.g., C60, C70, etc.)423/447.1, Fiber, fabric, or textile423/447.6, Including reaction with gaseous oxygen423/447.3From gaseous reactants

Examiners

Primary: Hendrickson, Stuart L.

Attorney, Agent or Firm

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Foreign Patent References

  • 9709272 WO. 03/09/1997
  • 9839250 WO. 09/09/1998
  • 9842620 WO. 10/09/1998
  • PCT/US00/15362 WO. 03/09/2010
  • WO 00/17102 WO. 03/09/2010

International Class

D01F 009/127

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