A method of producing a carbon nanotube product comprising a catalytic particle and carbon nanotubes deposited thereon. The catalytic particles preferably contain Co or Ni metal from Group VIII, and Mo or W metal from Group VIb. The catalytic particle preferably comprises a support material upon which the metals are disposed. The carbon nanotube product is preferably formed by exposing the catalytic particle to a carbon-containing gas at a temperature sufficient to form the carbon nanotubes as a primary portion of a solid carbon product with minor amounts of graphite and amorphous carbon residue.