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ESR Analysis of Industrial Needle-Coke Samples

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Abstract

Industrial needle-coke samples are studied. Their paramagnetic characteristics are determined over a broad range of magnetic fields. 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 samples. For some samples, the ESR spectra contain two sharply resolved signals from centers associated with aliphatic and aromatic fragments. That indicates incomplete structural transformation.

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ACKNOWLEDGMENTS

This research was conducted on equipment at the Collective-Use Center of the Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences.

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Authors and Affiliations

  1. Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia

    Z. R. Ismagilov, A. P. Nikitin, A. S. Valnyukova & E. S. Mikhaylova

  2. Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

    Z. R. Ismagilov

  3. Ufa State Petroleum Technological University, Ufa, Russia

    V. P. Zaporin & A. G. Galyautdinov

Authors
  1. Z. R. Ismagilov
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  2. A. P. Nikitin
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  3. A. S. Valnyukova
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  4. E. S. Mikhaylova
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  5. V. P. Zaporin
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  6. A. G. Galyautdinov
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Corresponding authors

Correspondence to Z. R. Ismagilov, A. P. Nikitin, A. S. Valnyukova, E. S. Mikhaylova, V. P. Zaporin or A. G. Galyautdinov.

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Translated by Bernard Gilbert

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Ismagilov, Z.R., Nikitin, A.P., Valnyukova, A.S. et al. ESR Analysis of Industrial Needle-Coke Samples. Coke Chem. 62, 89–94 (2019). https://doi.org/10.3103/S1068364X19030037

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  • DOI: https://doi.org/10.3103/S1068364X19030037

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