carbide cycle mechanism is reported using 1,2-dichloroethane decomposition as an example. The role of the
physical stage of the carbide cycle is elucidated, and massive metal surface activation methods ensuring the
realization of this stage are considered. The surface layer of massive nickel or some nickel alloys is most effec-
tively activated by the action of chlorine resulting from the catalytic decomposition of 1,2-dichloroethane. It
has been demonstrated by ferromagnetic resonance (FMR) spectroscopy that the activation of the massive metal
surface in 1,2-dichloroethane decomposition to nanocarbon is due to the surface undergoing crystal chemical
restructuring. The microstructuring of the surface yields fine Ni particles similar in size (0.2–0.3
m) and shape, whose FMR spectra are anisotropic and have similar magnetic resonance parameters. Both chlorine-free and
chlorinated hydrocarbons decompose over these particles via the carbide cycle mechanism. It is demonstrated
that it is possible to design catalytic reactors packed with massive nickel or its alloy. The nanocarbon material
obtained in such a reactor will not be contaminated by components of conventional catalyst supports (Al, Mg,
etc.). The stable performance temperature of the catalyst will be increased, and this will allow the equilibrium
outlet methane concentration to be reduced.