Method and apparatus for producing carbon nanotubes
US7585482B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2005 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Dec 16, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/845
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of purifying a single-walled carbon nanotube catalytic product having the steps of providing a catalytic product including single-walled carbon nanotubes, and a Group VIII and/or Group VIb transition metal, exposing the catalytic product to a heated oxidative gas to provide a treated carbon nanotube product including single-walled carbon nanotubes and the Group VIII and/or Group VIb transition metal, and exposing the treated carbon nanotube product to an acid to separate the single-walled carbon nanotubes from the Group VIII and/or Group VIb transition metal. The catalytic product may include a support material and amorphous carbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.