Analytical pyrolysis as a tool for the study of plastic coals

John W. Reasoner, James C. Hower, Linda P. Yates, William G. Lloyd

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The technique of analytical pyrolysis has been used to characterize 40 similar mid-rank western Kentucky coals of widely differing ASTM Gieseler plasticity. Certain pyrolysis/g.c. variables were shown to correlate well with both ASTM Gieseler and isothermal plasticity. Highly plastic coals were shown to exhibit certain characteristic peaks in the 450 °C pyrogram which were absent in the pyrogram of the non-plastic coals. Two coals, representing the two extremes in plasticity, were selected for further study. After extraction with solvents such as DMF the characteristic peaks were absent in the 450 °C pyrogram of the extraction residue of the highly plastic coal. These peaks were also shown to decrease with increasing severity of air oxidation of the plastic coal. This technique appears to be a useful tool for the analysis of mid-rank plastic coals and supports the view that the substances contained in the bitumen fraction of these coals are involved in the development of the plastic state.

Original languageEnglish
Pages (from-to)1269-1273
Number of pages5
Issue number9
StatePublished - Sep 1985

Bibliographical note

Funding Information:
This work has beenf undedthrough US Energy grant DE-FG22-81PC40793.


  • analytical pyrolysis
  • coal
  • plastic coals

ASJC Scopus subject areas

  • Chemical Engineering (all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry


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