Abstract
In this paper, we report the results of studying the combustion characteristics of fuels containing a hydrogen–hydrocarbon (C1–C6, as in CH4, C2H6, C3H8, C4H10, C5H12, and C6H14) mixture with a fuel fraction of 0.6–1.2 in a mixture with air above the palladium surface at a total pressure of 1–2 atm. The propagation features of the flame front in mixed fuels are revealed, and the temperature dependences of the ignition limit over the palladium surface are determined. The observed separation of the CH and Na emission bands in time during the combustion of the 30% propane + 70% H2 + air mixture (the fuel fraction in the mixture with air is unity) was established to be caused by the occurrence of hydrodynamic instability of the flame when it touches the end of a cylindrical reactor.
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Funding
This work was supported by the state order AAAA-A17-117011910011-09 to study combustion above the metallic palladium surface using high-speed color video recording, the state orders AAAA-A17-117040610346-5 and AAAA-A19-119010990034-5 to study combustion of hydrogen-methane-air mixtures, and the state orders AAAA-A20-120011690135-5 and AAAA-A18-1180227900133-1 to apply hyperspectral surveys and to subsequently analyze the results.
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Kalinin, A.P., Rubtsov, N.M., Vinogradov, A.N. et al. Ignition of Hydrogen–Hydrocarbon (C1–C6)–Air Mixtures over the Palladium Surface at 1–2 Atm. Russ. J. Phys. Chem. B 14, 413–421 (2020). https://doi.org/10.1134/S1990793120030057
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DOI: https://doi.org/10.1134/S1990793120030057