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ISSN 1068-364X, Coke and Chemistry, 2019, Vol. 62, No. 3, pp. 89–94. © Allerton Press, Inc., 2019. Russian Text © The Author(s), 2019, published in Koks i Khimiya, 2019, No. 3, pp. 8–14. COKE a, b, a, a, Z. R. Ismagilov *, A. P. Nikitin **, A. S. Valnyukova ***, a, c, c, E. S. Mikhaylova ****, V. P. Zaporin *****, and A. G. Galyautdinov ****** Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia Ufa State Petroleum Technological University, Ufa, Russia *e-mail: zinfer1@mail.ru **e-mail: nikitinandreyp@yandex.ru ***e-mail: nastya711@bk.ru ****e-mail: e_s_mihaylova@mail.ru *****e-mail: e-mail: inftek@yandex.ru ******e-mail: airatg@mail.ru Received February 4, 2019; revised February 4, 2019; accepted February 15, 2019 Abstract—Industrial needle-coke samples are studied. Their paramagnetic characteristics are determined over a broad range of magnetic f ields. For some samples, no pronounced signal from the microwave resonator is observed. This indicates that the conversion of the molecular structure to coke is complete in those sam- ples. For some samples, the ESR spectra contain two sharply resolved signals from centers associated with aliphatic and aromatic fragments. That indicates incomplete structural transformation. Keywords: electron
Coke and Chemistry – Springer Journals
Published: Jun 24, 2019
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