Abstract
The boiling ranges of the solvent soluble fractions from coal liquefaction residues (Wandoan, Wyoming and Illinois coals) were determined by the TG method. 40-50% of the residues were dissolved into benzene and 4-5% into n-hexane. Illinois coal residue contains a slightly larger amount of benzene soluble fraction. The coal liquefaction residues showed 40-50% of weight decrease up to 800-950°C by TG at 100°C/min of heating rate under 1Torr. About 70-80% of benzene solubles were distilled up to 700°C. The n-hexane soluble fractions were the lighter ones in this study, which should contain heavier constituents than crysene by GC. It is concluded that the organic constituents from coal liquefaction residues were very heavy.
