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ESR Analysis of Industrial Needle-Coke Samples

ESR Analysis of Industrial Needle-Coke Samples 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Coke and Chemistry Springer Journals

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References (25)

Publisher
Springer Journals
Copyright
Copyright © 2019 by Allerton Press, Inc.
Subject
Chemistry; Industrial Chemistry/Chemical Engineering
ISSN
1068-364X
eISSN
1934-8398
DOI
10.3103/S1068364X19030037
Publisher site
See Article on Publisher Site

Abstract

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

Journal

Coke and ChemistrySpringer Journals

Published: Jun 24, 2019

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