Carbonization of α2-fraction isolated from thermosolvolysis coal pitch, analysis of the structure of carbonizates

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Abstract

The article presents the results of the study of the composition and thermal transformations of α2-fraction (quinoline-soluble, toluene-insoluble), isolated from the pitch product of thermal dissolution of coal in a binary mixture of technical solvents of coal and oil origin. Based on thermal analysis data, the dynamics of α2-fraction destruction with the release of volatile substances in the temperature range up to 1100°C was established. Carbonized products were obtained by carbonization of the α2-fraction. The features of the molecular composition and spatial structure of the starting materials and the obtained carbonizates depending on temperature were studied using chemical analysis, IR spectroscopy, CP/MAS13C NMR and X-ray diffraction. A consistent transformation of spatial structural components into packet turbostratic and graphite domains was established. It was shown that at an elevated temperature of 1100°C, extended forms of graphite domains are formed — precursors of needle coke.

About the authors

P. N. Kuznetsov

Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center SB RAS”

Email: kuzpn@icct.ru
660036 Krasnoyarsk, Russia

B. Avid

Institute of Chemistry and Chemical Technology MAS

Ulaanbaatar, Mongolia

L. I. Kuznetsova

Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center SB RAS”

660036 Krasnoyarsk, Russia

A. M. Zhizhaev

Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center SB RAS”

660036 Krasnoyarsk, Russia

E. S. Kamensky

Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center SB RAS”

660036 Krasnoyarsk, Russia

O. Y. Fetisova

Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center SB RAS”

660036 Krasnoyarsk, Russia

G. N. Bondarenko

Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center SB RAS”

660036 Krasnoyarsk, Russia

S. A. Novikova

Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center SB RAS”

660036 Krasnoyarsk, Russia

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