PROCESS FOR MAKING MULTI-WALLED CARBON NANOTUBES AND MULTI-WALLED CARBON NANOTUBES FORMED THEREFROM

摘要

A process for making multi-walled carbon nanotubes includes contacting a hydrocarbon-containing gas with an electron beam-treated fly ash catalyst. The electron beam-treated fly ash catalyst contains a total amount of iron oxide and vanadium oxide of up to 5 wt. %. The multi-walled carbon nanotubes may be formed in a low pressure chemical vapor deposition apparatus.