Using GC-MS the composition of hydrocarbons in maltenes from heavy naphthenic crude oil (Usinskoye oilfield) after cracking in the presence of WC/Ni–Cr additive and without it has been studied. Cracking of maltenes was carried out at 450°С for 2 hours in isothermal mode. Using WC/Ni–Cr additive during cracking contributes to the deepening of the degradation reactions in hydrocarbons and resins. It is shown that the amount of low molecular weight C11–C19 alkanes and C9–C10 alkylbenzenes increases significantly in cracking products when using WC/Ni–Cr, the content of cyclohexanes and bicyclanes decreases, complete destruction of tri-, tetra- and pentacyclic saturated hydrocarbons occurs compared to cracking without the additive. There are changes in the composition of naphthenic hydrocarbons. Along with degradation reactions, condensation reactions occur, leading to the formation of polycyclic aromatic hydrocarbons.
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The work was carried out within the framework of the state task of the Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences (project V. 46.2.2), funded by the Ministry of Science and Higher Education of the Russian Federation.
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 1, pp. 34–40 January – February, 2022.
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Pevneva, G.S., Voronetskaya, N.G. & Sviridenko, N.N. Hydrocarbon Composition of Maltene Cracking Products of Naphthenic Oil with WC/Ni–Cr Additive. Chem Technol Fuels Oils 58, 289–296 (2022). https://doi.org/10.1007/s10553-022-01381-9
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DOI: https://doi.org/10.1007/s10553-022-01381-9