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US 9,434,617 B2Granted
Carbon nanotubes and method for manufacturing the same
AssigneeLG Chem, Ltd.
InventorsKyung Yeon Kang, Jin Do Kim, Sung Jin Kim, Jae Keun Yoon
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Abstract
Disclosed are carbon nanotubes and a method for manufacturing the same. Advantageously, the method provides a high yield of potato or sphere-shaped non-bundled carbon nanotubes having a bulk density of 80 to 250 kg/m3, an ellipticity of 0.9 to 1.0 and a particle diameter distribution (Dcnt) of 0.5 to 1.0 using a two-component carbon nanotube catalyst comprising a catalyst component and an active component.
Claims11
Carbon nanotubes comprising:
- a two-component carbon nanotube catalyst,
- wherein a bulk density of the carbon nanotubes is in a range of 80 to 250 kg/m3,
- wherein the two-component carbon nanotube catalyst comprises an alumina support (Al2O3), a catalyst component, multicarboxylic acid and an active component,
- wherein the number of moles (x) of the catalyst component and the number of moles (y) of the active component satisfy 34≦x≦46, 2≦y≦9 and 40≦x+y≦53, based on 100 mol of the alumina support, and
- wherein the two-component carbon nanotube catalyst is prepared by mixing a clear aqueous metal solution including the catalyst component, the active component and the multicarboxylic acid with the alumina support.
2 more elements
Dependencies are inferred from the claim text.