METHOD FOR SELECTIVELY PRODUCING ORDERED CARBON NANOTUBES

摘要

The invention relates to a method for selectively producing nanotubes made of carbon ordered by decomposing a gaseous carbon source in contact with at least one solid catalyst in the form of catalyst grains which are made of an alumina porous support provided with a metallic ferrous non-oxidised deposit and whose mean grain-size ranges from 25 mum to 2.5 mm and on which said metallic ferrous deposit covers more than 75 % of the surface of the microscopic alumina support and is embodied in the form of at least one cluster formed by a plurality of metallic agglutinated bulbs.