Composition of High-Molecular-Weight Heteroatomic Components of Oil Shale Organic Matter
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osition of High-Molecular-Weight Heteroatomic Components of Oil Shale Organic Matter E. Yu. Kovalenkoa, *, A. V. Petrova, I. S. Korol’b, T. A. Sagachenkoa, R. S. Mina, and Yu. F. Patrakovc a
Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences, Tomsk, 634055 Russia Tomsk Branch of Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch, Russian Academy of Sciences, Tomsk, 634055 Russia c Institute of Coal, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, 650065 Russia *e-mail: [email protected]
b
Received October 14, 2019; revised May 7, 2020; accepted May 12, 2020
Abstract—The composition of sulfur-bound compounds of asphaltic–resinous substances of bitumen from oil shale sampled from the Dmitrievskoe deposit (Kuzbass) has been studied using the technique of selective chemical destruction. It has been shown that the structure of asphaltenes and resins contains moieties represented by alkanes, phenylalkanes, phenanthrenes, fluoranthenes, pyrenes, and methyl esters of aliphatic acids that are linked to each other or to the polycondensed core of their molecules through alkyl sulfide bridges. A distinctive feature of asphaltene molecules is the presence of S-bound phenyl- and naphthene-substituted aromatic hydrocarbons and aromatic oxygen-containing compounds in their composition. Keywords: oil shale, organic matter, resins, asphaltenes, S-bound compounds, composition of sulfur-bound compounds DOI: 10.1134/S0965544120090145
Among the known types of solid fuels, oil shale (OS) occupies a special place, since it is a complex organomineral entity [1] containing conditionally from 20 to 50% organic matter (OM) predominantly of sapropel nature. In terms of OS reserves, Russia occupies one of the first places in the world and has experience in the technology of its processing and use. Despite the significant potential reserves for processing and favorable production conditions, the Russian shale fields are currently not being developed and not finding industrial use. One of the constraining factors is the lack of information on the OM composition. The recent literature mainly focuses on the chemical and geochemical characteristics of source rock reservoirs with an emphasis on the composition of organic compounds of oils [2, 3]. At the same time, to determine the energy and chemical potential of OS samples, an integrated investigation is required, including the study of the chemical nature of the entire range of components that make up the original organic matter of the shale material. This work is a continuation of the study of the organic matter of the OS sample from the Dmitrievskoe deposit in the Kemerovo oblast, the total geological reserves of which are estimated at 0.3 to 3.0 billion tons at a bed thickness of 20 to 50 m [4, 5]. Earlier [5] we obtained data on the individual composi-
tion of saturated, aromatic, and heteroorganic (HOC) compounds of its oil components. In this communication, we present the result
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