Synthesis of high quality carbon single-walled nanotubes
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United States of America Patent
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-
Nov 3, 2015
Issued Date -
N/A
app pub date -
May 1, 2008
filing date -
May 1, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods and processes for synthesizing high quality carbon single-walled nanotubes (SWNTs) are provided. A carbon precursor gas at reduced concentration (pressure) is contacted with a catalyst deposited on a support and at temperature about 10° C. above the SWNT synthesis onset temperature, but below the thermal decomposition temperature of the carbon precursor gas for given growth conditions. The concentration (pressure) of the carbon precursor gas can be controlled by reducing the total pressure of the gas, or by diluting with an inert carrier gas, or both. The methods produce SWNTs with the ratio of G-band to D-band in Raman spectra (IG:ID) of about 5 to about 200.
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International Classification(s)
- 2008 Application Filing Year
- D01C Class
- 9 Applications Filed
- 7 Patents Issued To-Date
- 77.78 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D01C Class
- 0 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 3, 2027 |
