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Structure and Texture of Industrial Coke Samples: A Comparison

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Abstract

Samples of baked low-temperature and needle coke are compared by X-ray phase analysis, X-ray structural analysis, analytical scanning electron microscopy, and adsorptional porosimetry. Their structural parameters (La and Lc) and textural characteristics (specific surface, pore structure) are determined, and their microstructure is investigated. Baked needle coke is characterized by anisotropic structure with La \( \gg \) Lc. In contrast, La and Lc are comparable for low-temperature coke. For baked needle coke, La and Lc are larger than for low-temperature coke. The difference in structural parameters of the coke samples corresponds to different morphology and textural characteristics of the coke particles. In the baked needle coke particles, packets of layers are separated by slot-like pores; in the unbaked particles, amorphous sponge-like microstructure is seen. The relation established between the structural parameters, morphology, and textural characteristics of the coke particles provides an additional tool for assessing coke quality.

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ACKNOWLEDGMENTS

This research employed equipment at the Kemerovo regional collective-use center, based at the Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences.

Funding

Financial support was received within the framework of the state program for the Institute of Coal Chemistry and Materials Science, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences (project EGISU 121033100144-8).

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Authors and Affiliations

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

    S. A. Sozinov, A. N. Popova, Yu. N. Dudnikova & Z. R. Ismagilov

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  1. S. A. Sozinov
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  2. A. N. Popova
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  3. Yu. N. Dudnikova
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  4. Z. R. Ismagilov
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Correspondence to S. A. Sozinov, A. N. Popova, Yu. N. Dudnikova or Z. R. Ismagilov.

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Translated by B. Gilbert

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Sozinov, S.A., Popova, A.N., Dudnikova, Y.N. et al. Structure and Texture of Industrial Coke Samples: A Comparison. Coke Chem. 64, 451–459 (2021). https://doi.org/10.3103/S1068364X21100069

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  • DOI: https://doi.org/10.3103/S1068364X21100069

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