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Coke and Chemistry

, Volume 61, Issue 2, pp 72–77 | Cite as

Producing Hexane-Insoluble Asphaltene Films from Coal Pitch

  • S. A. Sozinov
  • L. V. Sotnikova
  • A. N. Popova
  • R. P. Kolmykov
  • D. M. Russakov
Chemistry
  • 17 Downloads

Abstract

The possibility of producing hexane-insoluble asphaltenes from a toluene solution of mid-temperature coal pitch is demonstrated. The topography, morphology, and structure of films consisting of asphaltene associates are studied by scanning and transmission electron microscopy. The thermal decomposition of hexane-insoluble asphaltenes is investigated in the range 20–800°C. Structuring of the film is observed at 495°C, regardless of the method employed: X-ray phase analysis or differential calorimetry. According to IR spectroscopic data, films heat-treated at 500°C contain graphene-like structures. X-ray diffraction shows the formation of graphene-like structures on heating the films to 800°C.

Keywords

coal pitch asphaltenes thin films carbonization 

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Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  • S. A. Sozinov
    • 1
  • L. V. Sotnikova
    • 1
  • A. N. Popova
    • 1
  • R. P. Kolmykov
    • 1
  • D. M. Russakov
    • 2
  1. 1.Federal Research Center of Coal and Coal Chemistry, Siberian BranchRussian Academy of Sciences, Research Center on the Composition and Structure of Carbon MaterialsKemerovoRussia
  2. 2.Kemerovo State UniversityKemerovoRussia

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