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coal tar
heat treatment
mesophase pitch


This article presents the results of research on mesophase pitch production from coal tar. The preparation of mesophase pitch was carried out by heat treatment in an argon atmosphere at temperatures of 300, 350, and 400 °C. The resulting carbon pitches were analyzed by scanning electron microscopy, Raman spectroscopy, and energy-dispersive analysis. An increase in the degree of surface degradation and the number of mesophase centers per unit area was observed with an increase in the treatment temperature to 300 °C. At 350 °C, a transition from an isotropic to an anisotropic structure was observed, where the mesophase centers were about 2 μm in size. A similar anisotropic structure was observed for a sample of coal tar obtained at 400 °C, and in some areas, a layered structure was observed, which could be associated with an increase in the graphitization degree of the samples. The particle size of the mesophase increases to 3.5-5 microns. The results of energy dispersive analysis showed that an increase in temperature leads to a decrease in the sulfur content. At 400 °C, sulfur is completely removed from the coal tar pitch composition. A correlation between the heat treatment temperature and the structure of the obtained pitch was established.



[1] Gorbacheva N. Coal generation in the context of new industrial development // World economy and international relations, 2016, № 6 (60), pp. 42-51. (In Russ.).

[2] Titov R.E. Coking of bituminous coals and the use of coking products // VI All-Russian Conference on Resource-Efficient Technologies - Energy and Enthusiasm of Young People. Tomsk, 2015, pp. 33-35. (In Russ.).

[3] Overview of the market of coal tar in the CIS (2nd Edition). Moscow, 2010, 75 p. (In Russ.).

[4] Gadetsky A. Technical proposal. Processing of coal tar and pitch at low power delayed coking units, 2016, 19 p. http://giproiv.ru/pdf/56-processing-of-coal-tar.pdf. (In Russ.).

[5] Prokhorov V.Yu. Optimization and ways of implementing the reinforcement of carbon fibers in the design and manufacture of carbon-carbon composite materials // Proceedings of the international symposium reliability and quality, 2007, № 2, pp. 92-93. (In Russ.).

[6] Ozel M.Z., Bartle K.D. Production of mesophase pitch from coal tar and petroleum pitches using supercritical fluid extraction // Turk Journal Chem, 2002, Vol. 26, pp. 417-424.

[7] Kiselkov D.M., Moskalev I.V., Strelnikov V.N. Carbon materials based on coal tar pitch // Bulletin of the Perm Scientific Center, 2013, № 2, pp. 13-22. (In Russ.).

[8] Aldashev R.A., Vasyutinskaya A.G., Tutkabaeva T.T., Amerik Yu.B., Mansurov Z.A. Thermopolycondensation of the resin for the extraction of low-temperature soot // Neftekhimiya, 1995, № 1 (35), pp. 62-66. (In Russ.).

[9] Amerik Y.B., Plate N.A. Deep conversion of heavy oil fractions through mesomorphic structures // Neftekhimiya, 1991, № 3 (31), pp. 355-378.

[10] Whitehouse S. and Rand B. Pitch-mesophase-carbon transformation diagrams for a variety of pitches // 17th Biennial Conf. on Carbon (Amer. Carbon Soc.). - Lexington, 1985, pp. 159-160.

[11] Li M., Liu D., Du H., Li Q., Hou X., Ye J. Preparation of mesophase pitch by aromatics-rich distillate of naphthenic vacuum gas oil. Applied Petrochem. Research, 2015, Vol. 5(4), pp. 339–346. doi:10.1007/s13203-015-0123-0

[12] Akhmetzhanov B.A., Umetaliev N.B., Zhdankin A.A. Experience and stages of diversification of coal production of JSC "SHUBARKOL KOMIR" // Mining Journal of Kazakhstan, 2011, №. 1, pp. 38-40. (In Russ.).

[13] Filippov M.M. Raman spectroscopy as a method for studying deeply coalified organic matter // Transactions of the Karelian Scientific Center of the Russian Academy of Sciences, 2014, № 1, pp. 115-134. (In Russ.).

[14] Janet Claire Karika. Characterization of graphitization in coal tar and petroleum pitches. Dissertation. Arizona State University, 1985, 144 p.

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