Chemistry and structure of coal-derived asphaltenes: Phase I. Quarterly progress report, April--June 1976. [Fractionation into 5 fractions]

Abstract

Coal liquids from the three direct general processes for converting coal to liquid'fuels, catalyzed hydrogenation, staged pyrolysis, and solvent refining, have been separated by solvent fractionation into five fractions. These fractions are: propane-soluble (oil); propane-insoluble and pentane-Aol.uble (re~in); pentane-insoluble and benzene-soluble (asphaltene); benzene-insoluble and carbon disulfic.le-soluble