carbon nanostructures and process for producing nanotubes, nanofibers and carbon based nanostructures

摘要

"Carbon nanostructures and process for the production of carbon-based nanotubes, nanofibers and nanostructures". The present invention relates to a continuous process for producing carbon-based nanotubes, nanofibers and nanostructures, comprising the following steps: generating an electrically powered plasma, introducing a carbon precursor and / or one or more catalysts and / or a carrier plasma gas in a reaction zone of a high temperature resistant airtight vessel optionally having a thermal insulation liner, vaporize the carbon precursor in the reaction zone at a very high temperature, preferably 4000 198 C or more. drive the plasma vehicle gas, the vaporized carbon precursor and the catalyst through a nozzle whose diameter is narrowing in the direction of the plasma gas flow, conduct the vehicle plasma gas, the vaporized carbon precursor and the catalyst in a blast cooling zone for nucleation, growth and blast-cooling operation with flow conditions generated by aerodynamic forces and electromagnet so that there is no significant recirculation of raw materials and products from the blast zone in the reaction zone, control the gas temperature in the blast zone between about 4000 198 C at the top of that zone and about 50 198 C at the bottom of that zone and control the blast cooling speed between 10¬ 4¬3 K / s and 10¬ 6¬ K / s, blast and extract nanotubes, nanofibers and other nanostructures based on carbon from the blast cooling zone, separate nanotubes, nanofibers and carbon-based nanostructures from other reaction products.