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Vapour Sorption on Coal: Influence of Polarity and Rank

Author

Listed:
  • Katarzyna Czerw

    (Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland)

  • Andrzej Krzyżanowski

    (Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland)

  • Paweł Baran

    (Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland)

  • Katarzyna Zarębska

    (Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland)

Abstract

The surface properties of coal, interactions with gaseous and vapour media, and knowledge of the pore structure are important in terms of preparation, use, and utilisation of coal. This publication combines new unpublished data with analyses included in earlier publications by the research team to expand and systematise information on the sorption of water vapour, methanol vapour, and the saturated and unsaturated hydrocarbons hexane, 1-hexene, heptane, 1-heptene, octane on coals of different ranks. The study showed that the affinity of coal for water and methanol is related to the content of oxygen in the coal rather than the rank of the coal. Water sorption is a multilayer phenomenon, while methanol sorption is a monolayer phenomenon. The water monolayer is greater than that of methanol for low-rank coal, but for the higher-rank coals it is the opposite. The sorption capacity of the applied hydrocarbons depends on the presence or absence of a double bond and the size of the molecule. It increases in the order: n-octane < n-heptane/n-hexane < 1-heptene < 1-hexene. The effect of a double bond is dominant over the influence of the length and shape of the molecule.

Suggested Citation

  • Katarzyna Czerw & Andrzej Krzyżanowski & Paweł Baran & Katarzyna Zarębska, 2022. "Vapour Sorption on Coal: Influence of Polarity and Rank," Energies, MDPI, vol. 15(9), pages 1-18, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:3065-:d:799596
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    References listed on IDEAS

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    1. Agnieszka Dudzińska & Natalia Howaniec & Adam Smoliński, 2017. "Effect of Coal Grain Size on Sorption Capacity with Respect to Propylene and Acetylene," Energies, MDPI, vol. 10(11), pages 1-10, November.
    2. Zhenjian Liu & Zhenyu Zhang & Sing Ki Choi & Yiyu Lu, 2018. "Surface Properties and Pore Structure of Anthracite, Bituminous Coal and Lignite," Energies, MDPI, vol. 11(6), pages 1-14, June.
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    Cited by:

    1. Natalia Kowalska & Ewelina Brodawka & Adam Smoliński & Katarzyna Zarębska, 2022. "The European Education Initiative as a Mitigation Mechanism for Energy Transition," Energies, MDPI, vol. 15(18), pages 1-18, September.

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