CATALYST AND METHODS FOR PRODUCING MULTI-WALL CARBON NANOTUBES

摘要

The present invention provides a catalyst precursor and a catalyst suitable for preparing multi-wall carbon nanotubes. The resulting multi-wall carbon nanotubes have a narrow distribution as to the number of walls forming the tubes and a narrow distribution in the range of diameters for the tubes. Additionally, the present invention provides methods for producing multi-wall carbon nanotubes having narrow distributions in the number of walls and diameters. Further, the present invention provides a composition of spent catalyst carrying multi-wall nanotubes having narrow distribution ranges of walls and diameters.

主权项

1. A catalyst precursor composition comprising:
a support; and mixed metal oxides on a surface of the support, wherein the mixed metal oxides include CoxFeyMoO4, wherein x is from about 2.44 to about 4.88 and y is from about 1.75 to 6.98.