Patent ID: 8728431
Filing Date: 2014-05-20
Classification: B01J,B82Y,C01B

Abstract:
1. A method for preparing carbon nanotubes, comprising: attaching a catalyst consisting of a compound in which a transition metal element of Group 8, 9 or 10 is coordinated to a nitrogen-containing dendrimer compound having at least one nitrogen atom, to which a metal element may be coordinated, on a surface of a substrate; and thermally decomposing a carbon compound in the vicinity of the substrate while supplying the carbon compound on the surface of the substrate to which the catalyst is attached, wherein the nitrogen-containing dendrimer compound is a phenyl azomethine dendrimer compound represented by the following general formula (1): wherein the A in general formula (1) is a core molecular group of the phenyl azomethine dendrimer and represented by a structure of the following formula: wherein the R 1 represents an aromatic group that may have a substituent, p represents the number of bonds to the R 1 , and the B in general formula (1) is represented by a structure of the following formula: in which one azomethine bond is formed for the A, the R 2 represents an aromatic group that may have the same or different substituent; the R in general formula (1) is represented by a structure of the following formula: in which an azomethine bond is formed to the B as a terminal group, and the R 3 represents an aromatic group that may have the same or different substituent; the n represents a generation number through a structure of the B of the phenyl azomethine dendrimer; and the m represents the number of terminal groups R of the phenyl azomethine dendrimer, m=p when n=0, and m=2 n p when n≧1.