METHOD FOR OBTAINING FIBROUS CARBON STRUCTURES BY CATALYTIC PYROLYSIS Russian patent published in 2011 - IPC D01F9/127 C01B31/02 B82B3/00 B82B1/00 

FIELD: electricity.

SUBSTANCE: invention can be used for creation of fillers of composite materials, gas-distributing layers in fuel elements, components of lubricants, hydrogen storage batteries, filter materials, carbon electrodes of lithium batteries, glue composites, carriers of catalysts, adsorbents, anti-oxidants during production of cosmetics, cold emission sources of electrons, modifying agents to special-purpose concrete, as well as for coatings screening microwave and RF radiation. Method involves pyrolysis of gaseous carbon-containing compounds on surface of metallised dust catalyst in flow reactor having the possibility of gas medium mixing. Aerosil particles containing clusters of the following metals on the surface as catalyst: nickel, cobalt or iron. Catalysts are obtained prior to the beginning of pyrolysis by reactivation of catalyst sprayed in reactor in current of hydrogen-containing gas at simultaneous mixing of gaseous medium. It is expedient to mix gaseous medium in reactor in fluidised bed mode with ultrasonic material dispersion. Outer diameter of obtained nanotubes is 5 to 35 nm; inner diameter is 4 to 12 nm; packed density is 0.3-0.4 g/cm³; total content of impurities is less than 1.2-1.5%; length is 0.5 to 3 mcm.

EFFECT: invention allows synthesising thinner nanotubes with high cleanliness, which have smaller spread in values as to diameters.

2 cl, 3 ex