Method of producing carbon nanostructures, and carbon nanotubes
AssigneeZeon Corporation
InventorAkiyoshi Shibuya
Life of this patent
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Abstract
A method of producing a carbon nanostructure is provided that enables production of a high-quality carbon nanostructure with a high yield. The method of producing a carbon nanostructure includes supplying a feedstock gas to a catalyst and growing a carbon nanostructure by chemical vapor deposition. A gas X that is derived from the feedstock gas and that comes into contact with the catalyst contains a hydrocarbon A having at least one cyclopentadiene skeleton and a hydrocarbon B having at least one acetylene skeleton. A total volume concentration [A] of the hydrocarbon A is at least 0.06%.
Claims4
Carbon nanotubes having a specific surface area of from 600 m2/g to 2,500 m2/g and having a purity of at least 98% according to X-ray fluorescence measurement, wherein
- in a Raman spectrum measured by resonance Raman scattering at an excitement wavelength of 532 nm,
- [Math 1]
- 0.6
- ≤
- (
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- k
- =
- 1
- n
-
-
- I
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- k
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- I
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- [
- Math
-
-
- 1
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- where IG+ represents intensity of a G+ band peak appearing near 1590 cm−1, IkBWF represents intensity of a kth G− band peak among n G− band peaks appearing in a range from 1500 cm−1 to 1560 cm−1, and n represents an integer of at least 1.
Dependencies are inferred from the claim text.