Continuous methods and apparatus of functionalizing carbon nanotube
US7998450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2009 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | May 31, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/742
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
The present invention relates to a continuous method and apparatus of functionalizing a carbon nanotube, and more specifically, to a continuous method of functionalizing a carbon nanotube under subcritical water or supercritical water conditions without additional functionalizing processes, comprising: a) continuously feeding the carbon nanotube solution and an oxidizer under a pressure of 50 to 400 atm, respectively or together, and then preheating the mixture of said carbon nanotube solution and said oxidizer; b) functionalizing the carbon nanotube in the preheated said mixture under the subcritical water or the supercritical water condition of 50 to 400 atm; c) cooling down the functionalized product into 0 to 100° C. and depressurizing the functionalized product into 1 to 10 atm; and d) recovering the cooled down and depressurized product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.