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US 11,377,354 B2Granted
Carbon nanotube growth method
AssigneeThe Aerospace Corporation
InventorsTeresa A. Moore, Brian B. Brady, Robert B. Driscoll
Life of this patent
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Abstract
A process for growing carbon nanotubes includes making carbon nanotubes by flowing methane into a tube. The process also includes increasing pressure to a high predefined pressure for the carbon nanotubes and maintaining temperature at a low predefined temperature for the carbon nanotubes. The high pressure and low temperature produce carbon nanotubes within minutes.
Claims13
A process for growing carbon nanotubes, comprising:
- making the carbon nanotubes by flowing methane into a tube;
- increasing pressure to a predefined pressure for the carbon nanotubes;
- and
- maintaining temperature at the predefined temperature for the carbon nanotubes without use of a dedicated metal catalyst, wherein
- the predefined pressure and predefined temperature produce the carbon nanotubes within minutes, and
- the predefined pressure is greater than or equal to 1000 psi and the predefined temperature is less than or equal to 800 degrees C.
3 more elements
A process for growing carbon nanotubes, comprising:
- growing the carbon nanotubes within a reactor tube without use of a dedicated metal catalyst at a pressure greater than 3,000 psi and at temperature less than or equal to 750 degrees Celsius, wherein
- the carbon nanotubes are grown from pure methane or a mixture of methane and light hydrocarbons.
Dependencies are inferred from the claim text.