The method of producing of nano-dimensional silicon carbide by compressing in a cyclic chemical reactor is proposed. Pyrolysis is initiated in mixtures of monosilane and hydrocarbon with argon. The resulting product is examined by X-ray diffraction and electron microscopy. It is established that the powder contains crystallites of silicon carbide with an average size of 5-12 nm. It is shown that at certain ratios of precursor concentrations in argon, the formation of carbon nanoparticles and/or graphene coating on the surface of SiC particles is also possible. The method is technological and efficient, it can be used in the production of high purity silicon carbide nanopowders and other compounds.
The method of producing nanopowders of Si and SiC by pyrolysis of a silicon-hydrocarbon mixture by compression in a cyclic process in a flow reactor is proposed and implemented. The obtained powders are characterized by X-ray diffraction and transmission electron microscopy. The new design solutions and use of ceramic coatings obtained by applying microarc oxidation for the piston-cylinder assembly – a compression unit of the reactor - allowed avoiding the use of compression rings and lubricants, achieving a high compression ratio and pressure and temperature in the reactor needed for monosilane pyrolysis. Pyrolysis in the flow reactor is convenient, technological and efficient in terms of its use in the production of high purity nanopowders.
The method of producing of nano-dimensional silicon carbide and experimental results of pyrolysis of a mixture of a silicon-hydrocarbon composition by compressing in a cyclic chemical reactor has been proposed. New structural design solutions and ceramic coatings obtained by applying the technology of microarc oxidation were used in the compression unit of the chemical compression reactor. This allowed us to forego the traditional schemes, to achieve a high compression ratio, and to obtain the pressure and temperature required in the reaction zone for silicon-hydrocarbon composition pyrolysis. The flow-through pyrolysis method in chemical compression reactor is convenient, technological and efficient to be used in the production of high purity silicon carbide nanopowders.
In most cases, the initiation of oxidation and synthesis of methane-air mixtures is carried out by increasing the temperature to above the limit ignition. The possibility of using of a pair of compression piston cylinder with the unique performance features for the conversion of hydrocarbons are discusses. The experimental facility enables working in the pressure range that would be unattainable in diesel engines.
The possibility of using of a pair of compression piston - cylinder with the unique performance features for the conversion of hydrocarbons are discusses. The experimental facility enables working in the pressure range that would be unattainable in diesel engines. The necessary degree of compression is managed and maintained by the computer system with a feedback.
