US 7,094,386 B2 · Method of producing single-walled carbon nanotubes

Abstract

A method of producing a carbon nanotube product comprising a catalytic particle and single-walled carbon nanotubes deposited thereon. The catalytic particles preferably 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 catalytic particle preferably further comprises a support material such as silica. The carbon nanotube product is preferably formed by exposing the catalytic particle to a carbon-containing gas at a temperature sufficient to form the single-walled nanotubes as a primary portion of a solid carbon product on the catalytic particles.

Claims22

Dependent claims

A method for selectively producing single-walled carbon nanotubes, comprising:

providing catalytic particles comprising at least one Group VIII metal, excluding iron, and at least one Group VIb metal selected from the group consisting of Mo and W;
providing a carbon containing gas;
and
feeding the catalytic particles and the carbon-containing gas into a reactor wherein the catalytic particles and carbon-containing gas are mixed at a temperature in a range of from about 650° C. to about 850° C. to catalytically produce carbon nanotubes such that the carbon nanotubes are primarily single-walled carbon nanotubes.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

10/926,317Filed 25 Aug 2004 · continuation

Priority

2 Jun 1999

Published

US 2005/0025696 A13 Feb 2005

Granted

22 Aug 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification27 codes

C01B 32/162
Preparation: characterised by catalysts
B01J 21/185
Carbon: carbon nanotubes
B01J 23/85
With arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium:…
B01J 23/88
Chromium, molybdenum or tungsten: molybdenum

Family

Application60/137,206Us provisional application · filed 2 Jun 1999

Application09/389,553Parent of this continuation · filed 3 Sep 1999

Application09/988,847Parent of this continuation · filed 19 Nov 2001

Application10/423,687Parent of this continuation · filed 25 Apr 2003

US 2005/0025696 A1Pre-grant publication · published 3 Feb 2005

US 6,994,907 B2Parent of this continuation

US 6,333,016 B1Parent of this continuation

US 2002/0165091 A1Published application

US 2004/0070009 A1Published application

US 7,094,386 B2This patent

From the US filing history. Foreign family members aren’t listed.

Method of producing single-walled carbon nanotubes

Life of this patent

Method of producing single-walled carbon nanotubes

Life of this patent

Abstract

Claims22