Production of Carbon Nanotubes over Pre‐reduced LaCoO3 by Using Fluidized‐bed Catalytic Reactor

A technique has been developed to grow carbon nanotubes by flowing acetylene over pre‐reduced LaCoO₃ catalyst in a fluidized‐bed catalytic reactor. Carbon nanotubes were characterized by means of SEM and TEM. The pre‐reduced LaCoO₃ catalyst was found to be effective in producing carbon nanotubes with even diameter. The effects of reduction temperature of LaCoO₃ on the growth of carbon nanotubes were investigated. This process can easily be scaled up.