Fe-Co/Al2O3 catalyst synthesized by solution combustion technique using glycine

UDK: 541.128:536.7

DOI: 10.24887/0028-2448-2025-12-140-143

Key words: catalysts, methane decomposition, solution combustion synthesis

Authors: P.B. Kurmashov(Novosibirsk State Technical University, RF, Novosibirsk); A.A. Shishin (Novosibirsk State Technical University, RF, Novosibirsk); V. Golovakhin (Novosibirsk State Technical University, RF, Novosibirsk); M.A. Danilenko (Novosibirsk State Technical University, RF, Novosibirsk); S.A. Shpakova (Novosibirsk State Technical University, RF, Novosibirsk); N.A. Belov (Novosibirsk State Technical University, RF, Novosibirsk); T.S. Gudyma (Novosibirsk State Technical University, RF, Novosibirsk); A.G. Bannov (Novosibirsk State Technical University, RF, Novosibirsk); D.А. Volkov (LUKOIL-Engineering LLC, RF, Moscow); Т.V. Rositskaia (LUKOIL-Engineering LLC, RF, Moscow); A.N. Korol (LUKOIL-Engineering LLC, RF, Moscow); R.G. Nurgaliev (RITEK LLC, RF, Volgograd); O.V. Slavkina (RITEK LLC, RF, Volgograd)

Within this study, catalysts of 80 % Fe-10 % Co/10 % Al2O3 were obtained via combustion synthesis of solutions. The high-percentage catalyst was synthesized by burning a solution as a result of the combined heat treatment of Fe(NO3)3-Al(NO3)3-C2H5NO2 components in a muffle furnace at 450 °C at a rate of 1 °C/min. The resulting catalyst was a powder with a specific surface area of 61 m2. The catalysts were tested in a horizontal reactor in the decomposition reaction of associated petroleum gas at 850 °C and 0,1 MPa for 6 hours. The synthesized catalyst sample, as well as the carbon nanomaterial obtained on it, were studied using scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, low-temperature nitrogen adsorption and X-ray diffraction. The specific carbon yield ranged from 10 to 33 g/g of catalyst. The dependence of carbon yield (and hydrogen) from the temperature of the catalytic reaction was identified, which varies in the range 750°С < 800°C < 950°C < 850°C. The catalytic decomposition of methane on Fe-Co/Al2O3 led to the formation of a mixture of multilayer carbon nanotubes and pyrocarbon (the deposition of the latter intensifies starting from 800°C). A comparison of the obtained data with the activity of the 80 % Fe-10 %Mo/10 % Al2O3 system was carried out. It is noted that, along with the high catalytic activity of the Fe-Co/Al2O3 system, catalysts based on Fe-Mo/Al2O3 may be a good alternative for the implementation of the process of catalytic decomposition of methane and associated petroleum gas.

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