Direct liquefaction refers to several processes which rely on thermal energy, hydrogen, and solvent to produce high yields of liquid products from coal. The focus of research in this type of coal conversion has therefore been directly stimulated by process improvements related to one or more aspects of these processes—or the generic form of these processes.


Bituminous Coal Coal Conversion Coal Liquefaction Coal Structure Liquefaction Process 
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Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • Michael G. Thomas
    • 1
  1. 1.Process Research Division, Sandia National LaboratoriesGeo Energy Technology DepartmentAlbuquerqueUSA

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