Massive synthesis method of double-walled carbon nanotubes using the vapor phase growth
OwnerCheol Leeinventor
Life of this patent
Estimating the term…
Abstract
A method of massively synthesizing double-walled carbon nanotubes is provided. In the method, catalyst metal particles having a size of a few nanometers are embedded in nano pores of a support material powder. Then, the support material powder embedding the catalyst metal particles is sintered at a temperature of 700-900° C. Then, the support material powder embedding the catalyst metal particles is loaded in a reactor. Thereafter, high purity double-walled carbon nanotubes are formed massively by vaporizing a carbon source solution at a temperature of 700-1100° C. and supplying the vaporized carbon source gas, or by directly supplying a carbon source gas to the reactor.
Claims7
A method of synthesizing double-walled carbon nanotubes, the method comprising:
- embedding catalyst metal particles composed of Fe, Co, Ni, Mo or an alloy of the elements and having a size of 2-5 nm in nano pores of a support material powder composed of MgO, Al2O3, zeolite or silica;
- sintering the support material powder in which the catalyst metal particles are embedded;
- and
- forming the double-walled carbon nanotubes by supplying a carbon source gas to the catalyst metal particles embedded in the support material powder and reacting the carbon source gas with the catalyst metal particles.
Dependencies are inferred from the claim text.