Carbon allotropes
AssigneeLyten, Inc.
InventorsDaniel Cook, Hossein-Ali Ghezelbash, Bryce H. Anzelmo, David Tanner, Shreeyukta Singh
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Abstract
A nanoparticle or agglomerate which contains connected multi-walled spherical fullerenes coated in layers of graphite. In different embodiments, the nanoparticles and agglomerates have different combinations of: a high mass fraction compared to other carbon allotropes present, a low concentration of defects, a low concentration of elemental impurities, a high Brunauer, Emmett and Teller (BET) specific surface area, and/or a high electrical conductivity. Methods are provided to produce the nanoparticles and agglomerates at a high production rate without using catalysts.
Claims27
A carbon nanoparticle comprising:
- at least two connected multi-walled spherical fullerenes;
- and
- layers of graphene coating the connected multi-walled spherical fullerenes;
- wherein:
- a Raman spectrum of the carbon nanoparticle using 532 nm incident light has a first Raman peak at approximately 1350 cm−1 and a second Raman peak at approximately 1580 cm−1, and a ratio of an intensity of the first Raman peak to an intensity of the second Raman peak is from 0.9 to 1.1.
A carbon nanoparticle comprising:
- at least two connected multi-walled spherical fullerenes;
- and
- layers of graphene coating the connected multi-walled spherical fullerenes;
- wherein a ratio of graphene to multi-walled spherical fullerenes is from 10% to 80%.
A method comprising:
- flowing a hydrocarbon feedstock process gas into a reaction zone;
- thermally cracking molecules of the feedstock process gas in the reaction zone;
- reacting the thermally cracked molecules to form carbon aggregates, each comprising at least two connected multi-walled spherical fullerenes coated in layers of graphene;
- and
- collecting the carbon aggregates;
- wherein:
- a Raman spectrum of the carbon aggregates using 532 nm incident light has a first Raman peak at about 1350 cm−1 and a second Raman peak at about 1580 cm−1, and
- a ratio of an intensity of the first Raman peak to an intensity of the second Raman peak is from 0.9 to 1.1.
Dependencies are inferred from the claim text.