Catalyst for producing carbon nanotubes and carbon nanotubes produced using same

A catalyst for producing carbon nanotubes, comprising a support and a graphitization metal catalyst supported on the support and having a maximum diffraction peak at a 2θ angle of 35 to 38° in the XRD pattern recorded in the 2θ range of 10° to 80° wherein when the intensity of the maximum diffraction peak and the intensity of a diffraction peak at a 2θ angle of 17 to 22° are defined as “a” and “b”, respectively, the ratio b/a is 0.09 to 0.15,

• wherein when the intensity of a diffraction peak at a 2θ angle of 63 to 67° is defined as “c”, the ratio c/a is in a range of 0.3 to 0.5,
• wherein the graphitization metal catalyst is a multi-component metal catalyst comprising a main catalyst and an auxiliary catalyst,
• wherein the main catalyst is selected from Co, Fe, and mixtures thereof and the auxiliary catalyst is V, and
• wherein the catalyst is a supported catalyst obtained by calcining aluminum hydroxide at a primary calcination temperature of 250° C. to 500° C. to form the support, supporting a catalytic metal precursor on the support, and calcining the catalytic metal precursor supported on the support at a secondary calcination temperature of 450° C. to 800° C., the secondary calcination temperature being higher by 200 to 400° C. than the primary calcination temperature, and
• wherein the catalyst has a crystal size of 3 to 50 nm.