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Journal of thermal analysis

, Volume 36, Issue 2, pp 481–488 | Cite as

Investigation of fast-heating pyrolysis of sapropelitic coals by mass-spectrometric thermal analysis

  • N. V. Bodoev
  • O. P. Korobeynitchev
  • S. V. Denisov
  • A. A. Paletskiy
Article

Abstract

The products of the fast-heating pyrolysis of two sapropelitic coals, from Taymalyr and Budagovo, in a helium flow were studied by differential mass-spectrometry (in the mass number range from 2 to 110). Equations describing the kinetics of the process under different conditions were produced. The mass-spectra of the sapropelitic coals are similar to those of switch oil evaporation products, which indicates the similarity of their chemical structures. The results obtained allowed the conclusion that the fundamental chemical structure of sapropelitic coals is a polycyclic hydrocarbon matrix of CH2 and CH groups with joinednalkane chains containing end-capping CH3 and COOH groups.

Keywords

Hydrocarbon Mass Number COOH Group Number Range Helium Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Mittels Differential-Massenspektroskopie im Massenzahlbereich von 2 bis 110 wurden die Produkte einer in einem Heliumstrom vollzogenen Schnellheizpyrolyse von Faulschlammkohle aus Taymalyr und Budagovo untersucht. Zur Beschreibung der Kinetik des Prozesses unter verschiedenen Bedingungen wurden Gleichungen entwickelt.Die Massenspektren der Faulschlammkohlen gleichen dennen von Verdampfungsprodukten aus Schalterölen, was auf die Ähnlichkeit ihrer chemischen Struktur hinweist. Die erhaltenen Ergebnisse erlauben den Schluß, daß die grundlegende chemische Struktur der Faulschlammkohlen eine polycyclische Kohlenwasserstoffmatrix aus CH2- und CH-Gruppen ist, von der n-Alkanketten mit endständigen CH3- und COOH-Gruppen abzweigen.

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References

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Copyright information

© Wiley Heyden Ltd, Chichester and Akadémiai Kiadó, Budapest 1990

Authors and Affiliations

  • N. V. Bodoev
    • 1
  • O. P. Korobeynitchev
    • 2
  • S. V. Denisov
    • 1
  • A. A. Paletskiy
    • 2
  1. 1.Siberian Branch of Academy of Sciences of the USSRInstitute of CoalKemerovoUSSR
  2. 2.Siberian Branch of Academy of Sciences of the USSRInstitute of Chemical Kinetics and CombustionNovosibirskUSSR

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