Hydrogenation of brown coal. 9. Physical characterization and liquefaction potential of australian coals

Peter Redlich, W. Roy Jackson, Frank P. Larkins

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A detailed chemical study has been made on a suite of 27 Australian coals of varying rank. The coals had a wide range of H/C values and, in addition to chemical analysis, were examined by Fourier transform infrared spectroscopy and 13C solid state n.m.r. The coals were reacted with hydrogen in tetralin at 405°C and in decalin under nitrogen at 320°C. The products of these reactions were examined by a variety of spectroscopic and other analytical techniques. On the basis of the results it is proposed that brown coals consist of a polymeric lignin-based structure which traps varying amounts of smaller, more aliphatic, molecules. Black coals have more complex structures.

Original languageEnglish
Pages (from-to)1383-1390
Number of pages8
Issue number10
Publication statusPublished - 1 Jan 1985


  • coal
  • hydrogenation
  • liquefaction potential
  • physical characterization

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