METHOD OF PRODUCING CARBON NANOTUBES AND APPARATUS FOR REALISING SAID METHOD Russian patent published in 2013 - IPC B82B3/00 C01B31/00 

FIELD: nanotechnology.

SUBSTANCE: invention relates to nanotechnology and specifically to production of carbon nanotubes which are widely used in various scientific and engineering fields. Method of producing carbon nanotubes is realised via a chemical deposition technique by passing inert gas-diluted carbon-containing material in form of vapour over a heated catalyst in a reactor while continuously feeding the catalyst, continuously discharging the product and a looped back gas flow scheme, wherein the composition of the gas coming out of the rector is adjusted and then redirected into the reactor, using nitrogen or argon as the diluent gas. The method is realised by partially collecting the spent mixture or selective removal of hydrogen using membrane filters based on ultra-thin palladium layers. The apparatus for realising said method is in form of a tubular reactor, a quartz tube which revolves around a longitudinal axis, a feeder, a heating unit with a control system for controlling temperature in the active zone of the reactor, components of the mechanism for revolving the quartz tube, a unit for controlling speed thereof and rate of feeding the gas mixture, a mechanism for adjusting the inclination angle of the reactor in order to control the rate of passage of the catalyst, which is adapted to continuously feed the catalyst and output the obtained product and spent gases.

EFFECT: realisation of the invention provides high efficiency and low cost, enables to obtain an end product with more uniform properties and maximum characteristics.

11 cl, 3 dwg