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2016/2
Thermal cracking of regular and irregular isoprenanes C20-C40
Technical sciences

Authors: Maxim V. GIRUTS graduated from Gubkin Russian State University of Oil and Gas in 2004. He is Doctor of Chemical Sciences, Associate Professor of the E-mail: moxixh@yahoo.com
Alexandra R. POSHIBAEVA graduated from Lomonosov Moscow State University in 2012. She is PhD (Chemical Sciences), Assistant Lecturer of the Department of Organic Chemistry & Petroleum Chemistryat Gubkin Russian State University (National Research University) of Oil and Gas. She is author of 20 scientific publications.
Е-mail: stroeva-poshibaeva@yandex.ru
Olga A. STOKOLOS graduated from Gubkin Russian State Academy of Oil and Gas in 1994. She is PhD (Chemical Sciences), Associate Professor of the Department of Organic Chemistry & Petroleum Chemistry at Gubkin Russian State University (National Research University) of Oil and Gas. She is specialist in organic chemistry and chemistry of petroleum hydrocarbons, author of more than 30 scientific publications. Е-mail: stokolos.o@gubkin.ru
Guram N. GORDADZE graduated from Georgian Polytechnic Institute in 1963. He is Doctor of Geological Sciences and Candidate of Chemical Sciences, Professor of the Department of Organic Chemistry & Petroleum Chemistry at Gubkin Russian State University (National Research University) of Oil and Gas. He is specialist in chemistry and geochemistry of petroleum hydrocarbons and author of more than 350 scientific publications.
E-mail: gordadze@rambler.ru

Abstract: Thermal cracking of regular and irregular isoprenanes С20–С40 was carried out, followed by the research of the distribution patterns of regular, irregular and pseudoregular isoprenanes C10–C20. It was found that no rupture of terminal methyl, ethyl and isopropyl groups occurs as a result of thermal cracking of phytane, krotsetane, squalane and likopane. The simultaneous rupture of C-C bonds at tertiary carbon atoms in the molecule isoprenanes doesn’t occur either. It was shown that the value of the ratio of genetic pristane/phytane indicator, which is used in the petroleum geochemistry for correlations of oil-oil and oil-extracted organic matter systems should be treated with caution

Index UDK: 553.98:543.51:547.912

Keywords: thermal cracking; regular, irregular and pseudo-regular izoprenanes

Bibliography:
1. Petrov A.A. Uglevodorody nefti [Petroleum hydrocarbons]. Moscow, 1984, 263 p. (in Russian).
2. Tissot B., Welte D. Petroleum Formation and Occurrence. Springer-Verlag, Berlin, 1978.
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5. Gordadze G.N. Uglevodorody v neftyanoi geohimii. Teoria I practika [The hydrocarbons in the oil geochemistry. Theory and practice]. Moscow, 2015, 559 р. (in Russian).
6. Stroeva A.R., Giruts M.V., Koshelev V.N., Gordadze G.N. Modeling of Formation of Petroleum Biomarker Hydrocarbons by Thermolysis and Thermocatalysis of Bacterium Biomass. Petroleum Chemistry, 2014, vol. 54, no. 5, p. 347–354.
7. Giruts M.V., Gordadze G.N., Stroeva A.R., Koshelev V.N. On the question of formation of petroleum hydrocarbons from bacteria biomass. Trudy RGU nefti i gasa imeny I.M. Gubkina [Gubkin Russian State University of Oil and Gas Proceedings], 2014, no. 2 (275), p. 82-93 (in Russian).
8. Okunova M.V., Giruts M.V., Erdnieva O.G., Koshelev V.N., Gordadze G.N. The formation of petroleum biomarker hydrocarbons from possible oxygen-containing precursors. Petroleum Chemistry, 2009, t. 49, no. 3, p. 207-217.

2014/4
Еxpansion of resource BASE of diamond-like structure hydrocarbons
Chemical sciences

Authors: Maxim V. GIRUTS graduated from Gubkin Russian State University of Oil and Gas in 2004. PhD (Chemical Sciences), assistant professor of the Department of organic chemistry & petroleum chemistry, Gubkin Russian State University of Oil and Gas. Specialist in chemistry and geochemistry of petroleum hydrocarbons. Author of more than 60 scientific publications. E-mail: moxixh@yahoo.com

Abstract: Diamond-like structure hydrocarbons due to their physical and chemical properties features find a wide range of applications in various fields of science, technology and industry: nanotechnology, medicine, manufacturing of highly resistant polymer materials and others. However, the existing methods for the synthesis of diamondoids are complex and multistage, and require further improvement. We performed thermolysis of asphaltenes, resins and high-molecular saturated (boiling above 350 °C) petroleum fractions of different genotypes, catalytic transformations of paraffin-cycloparaffinic fractions (boiling within 180-350 °C above 350 °C) of oils, catalytic thermal transformations of oxygen-containing compounds - precursors of petroleum hydrocarbons, thermo-lysis of macromolecular n-alkanes, as well as catalytic transformations of biomass of bacteria. Analysis of the hydrocarbon composition of the original oils, paraffin-cycloparaffinic fractions, thermolysis products and catalytic transformations was carried out by capillary gas-liquid chromatography and chromato-graphy-mass spectrometry. We have found that diamond-like structure hydro-carbons C10 to C23 form as a result of the above transformations. Thus a possibility of obtaining hydrocarbon of adamantane series from alternative sources was shown

Index UDK: 547

Keywords: diamondoids, protodiamondoids, adamantanes, diamantanes, triamantanes, tetramantanes

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46. Giruts M.V., Rusinova G.V. and Gordadze G.N. Generation of Adamantanes and Diamantanes by Thermal Cracking of High-Molecular-Mass Saturated Fractions of Crude Oils of Different Genotypes. Petroleum Chemistry, 2006, vol. 46, no. 4, pp. 225–236.
47. Okunova T.V., Giruts M.V., Erdnieva O.G., Koshelev V.N. and Gordadze G.N. The Formation of Petroleum Biomarker Hydrocarbons from Possible Oxygen-Containing Precursors. Petroleum Chemistry, 2009, vol. 49, no. 3, pp. 207–217.
48. Giruts M.V., Badmaev Ch.M., Erdnieva O.G., Stokolos O.A., Koshelev V.N. and Gordad- ze G.N. Identification of Triamantanes in Crude Oils. Petroleum Chemistry, 2012, vol. 52, no. 2, pp. 65–67.
49. Giruts M.V., Derbetova N.B., Erdnieva O.G., Stokolos O.A., Koshelev V.N. and Gordadze G.N. Identification of Tetramantanes in Crude Oils. Petroleum Chemistry, 2013, vol. 53, no. 5, pp. 285–287.
50. Gordadze G.N. and Giruts M.V. Synthesis of Adamantane and Diamantane Hydrocarbons by High-Temperature Cracking of Higher n-Alkanes. Petroleum Chemistry, 2008, vol. 48, no. 6, pp. 414–419.
51. Giruts М.V., Gordadze G.N. N-alkany — vozmozhnye predshestvenniki diamantanov, naydennykh v organicheskom veshchestve kristallicheskogo fundamenta Tatarstana [n-Alkanes are possible precursors of diamantanes found in the organic matter of the crystalline basement of Tatarstan]. Georesursy — Georesources, 2008, no. 1(24), pp. 9–12 (in Russian).
52. Giruts M.V., Gordadze G.N., Stroeva A.R., Stokolos O.A., Bogatyrev S.O. and Koshelev V.N. Generation of Hydrocarbons Having Adamantine Structure from Bacterial Biomass. Chemistry and Technology of Fuels and Oils, 2014, vol. 50, no. 4, pp. 290–298.
53. Giruts M.V., Gordadze G.N., Stroeva A.R. and Koshelev V.N. K voprosu obrazovaniya uglevodorodov nefti iz biomassy bakteriy [On the question of formation of petroleum hydrocarbons from bacteria biomass]. Trudy RGU nefti i gaza imeni I.M. Gubkina [Proceedings of Gubkin Russian State University of Oil and Gas], 2014, no. 2(275), pp. 82–93.

2014/2
Formation of petroleum hydrocarbons from bacterial biomass
Oil and gas processing, chemistry of oil and gas

Authors: Maxim V. GIRUTS graduated from Gubkin Russian State University of Oil and Gas in 2004. He is Candidate of Chemical Sciences, Associate Professor of the Department of Organic Chemistry and Petroleum Chemistry of Gubkin Russian State University of Oil and Gas. He specializes in the field of chemistry and geochemistry of petroleum hydrocarbons. He is author of more than 50 scientific publications. E-mail: moxixh@yahoo.com
Guram N. GORDADZE graduated from the Georgian Polytechnic Institute in 1963; he is Doctor of Geological and Mineralogical Sciences and Candidate of Chemical Sciences, Full Professor of the Department of Organic Chemistry and Petroleum Chemistry of Gubkin Russian State University of Oil and Gas. He specializes in the field of chemistry and geochemistry of petroleum hydrocarbons. He is author of over 300 scientific publications. E-mail: gordadze@rambler.ru
Alexandra R. STROEVA graduated from Lomonosov Moscow State University in 2012. She is postgraduate student at the Department of Organic Chemistry and Petroleum Chemistry of Gubkin Russian State University of Oil and Gas. She specializes in the field of microbiology. She is author of 11 scientific publications. Е-mail: stroeva@inbox.ru
Vladimir N. KOSHELEV graduated from Gubkin Moscow Institute of Petrochemical and Gas Industry in 1975, he is Doctor of Chemical Sciences, Professor, Head of the Department of Organic Chemistry and Petroleum Chemistry of Gubkin Russian State University of Oil and Gas. He is a specialist in the art of synthetic organic chemistry and petro chemistry. He is author of over 280 scientific publications E-mail: koshelev.v@gubkin.ru

Abstract: The analysis of compounds of native biomass as well as of thermolysis products and biomass thermocatalisys of chemo-organo-heterotrophic bacteria Pseudomonas aeruginosa RM and Arthrobacter sp. RV. In the soluble portion of the biomass we identified marginal n-alkanes mostly with an odd number of carbon atoms (C7-C17) and with one carbon atom more than the corresponding unsaturated fatty acid n-(C8-C18), as well as high molecular n-alkanes with an even number of carbon atoms in molecules of C22, C24, C30, C32 composition. Both strains synthesized unsaturated irregular izoprenane – squalene (2,6,10,15, 19,23-geksamethyltetracosane-6,10,14,18,22-2-hexane). It is suggested that the reason for the prevalence of n-alkanes with an odd number of carbon atoms in immature oils is not only the decarboxylation of the corresponding acids, but also bacterial synthesis. The products of thermolysis and thermocatalysis of the insoluble portion of biomass of these strains of bacteria showed the same hydrocarbon biomarkers as those present in oils , i.e. n-alkanes, C13-C20 izoprenanes, including regular izoprenane of regular C17 composition, which is virtually absent in all the world oils, as well as steranes and also terpanes. The products of thermolysis of both strains of bacteria showed the prevalence of n-alkanes with an odd number of carbon atoms per molecule (n-R9, n-C11, n-C15 and n-C17), while thermocatalysts displayed n-alkanes with an even number of atoms (n-C16 n-C18 and n-C20). The distribution of regular C27-C29 steranes resembles that in marine oils generated in clay strata, whereas the ratio of adiantane to hopane (G29/G30) is characteristic of organic matter generated in carbonate strata. Thermolysis products of the insoluble portion of bacteria generated proto-adamantanes and proto-diamantanes while the products of thermocatalysis with aluminosilicate also generated C10-C13 adamantanes and C14-C16 diamantanes. It is suggested that one of the possible ways for the formation of diamond-like structure of hydrocarbons in oils can be catalytic conversion of biomass of bacteria

Index UDK: УДК 579.22:579.66:547.912

Keywords: origin of petroleum, petroleum hydrocarbons, bacteria, prokaryotes, thermolysis, thermocatalysis, proto-adamantanes, proto-diamantanes, adamantanes, diamantanes

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17. Giruts M.V., Derbetova N.B., Erdnieva O.G., Stokolos O.A., Koshelev V.N., Gordadze G.N. Identification tetramantans in oils. [Petroleum Chemistry], 2013, vol. 53, no. 5, 285 p.
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21. Giruts M.V, Rusinova G.V., Gordadze G.N. Generation of adamantane and diamantan of saturated boiling oil fractions of different genotypes in the presence of acid catalysts. [Petroleum Chemistry], 2005, vol. 45, no. 3, 141 p.
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2012/1
Comparative characteristics of Jurassic cretaceous oils of Kalmykia using triamantans
Oil and gas processing, chemistry of oil and gas

Authors: Maxim V. GIRUTS was born in 1981, graduated from the Gubkin State University Oil and Gas in 2004. Lecturer, Deputy Head of the Department of Organic Chemistry and Petroleum Chemistry, Gubkin State University Oil and Gas. Author scientific publications in the field of oil chemistry and organic geochemistry. E-mail: moxixh@yahoo.com
Chingiz M. BADMAEV was born in 1985, graduated from the Kalmyk State University in 2008, Laboratory of Organic Chemistry and Petroleum Chemistry, Gubkin State University Oil and Gas. Author of 13 scientific papers in the field of oil chemistry. E-mail: chingizbadmaev@mail.ru
Olga An. STOKOLOS graduated from the Gubkin State University Oil and Gas in. Lecturer, deputy dean of the Faculty of Chemical Technology and Ecology, Gubkin State University Oil and Gas. Author of scientific publications in the field of oil chemistry. E-mail: stokolos@gubkin.ru
Guram N. GORDADZE was born in 1940, graduated from Georgian Technical University in 1965. He is Professor of the Department of Organic Chemistry and Petroleum Chemistry of Gubkin Russian State University of Oil and Gas. Аuthor of over 300 scientific papers in the field of oil chemistry and organic geochemistry. E-mail: gordadze@rambler.ru

Abstract: The method of gas chromatography-mass spectrometry was applied to study the distribution of hydrocarbons of diamond-like structure — the triamantans C18-C19 -in oils and condensates of Kalmykia, occurring in the Cretaceous and Jurassic sediments. It is shown that extraneous peaks present in the mass chromatograms of paraffin-cyclo-paraffinic petroleum fractions with 240 and 239 m/z do not interfere with the identification and calculation of triamantans and calculation of their relative concentrations. We found that the Jurassic and Cretaceous oils are possible to distinguish between by relative distribution of C18 triamantan.

Index UDK: 547. 919

Keywords: triamantans, gas chromatography, mass spectrometry of oils, hydrocarbons, diamond-like structure of oil

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