Comments on “Li, W., Song, Y., Yang, W.-B., Mathews, J.P., 2022. Structural transformations for a subbituminous coal, impact of temperature on gold-tube pyrolysis chars evaluated using HRTEM. Fuel 311, art. no. 122581.”

Research output: Contribution to journalLetterpeer-review

Abstract

The manuscript under discussion is problematical owing to conflicting and contradictory coal rank indicators listed in the Methods section and in the title and text. The subbituminous rank as per the title does not match the high volatile A bituminous volatile matter or the Rock-Eval Tmax or the medium to low volatile bituminous vitrinite maximum reflectance. Further, the volatile matter and the Rock-Eval Tmax do not match the vitrinite maximum reflectance. Since the coal is said to have thermoplastic properties, the proper delineation of a subbituminous versus bituminous, i.e., non-caking versus caking coals, coal rank is critical for the proper interpretation of the results.

Original languageEnglish
Article number130486
JournalFuel
Volume359
DOIs
StatePublished - Mar 1 2024

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

  • Coal rank
  • Coking coal
  • Transmission electron microscopy
  • Vitrinite

ASJC Scopus subject areas

  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

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