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Effect of mercury on depolymerization of coal

✍ Scribed by Yuda Yürüm; İsmail Yiǧinsu; Birgül Zümreoǧlu

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
232 KB
Volume
58
Category
Article
ISSN
0016-2361

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✦ Synopsis

Hg). Soxhlet extraction of the residue with pyridine was followed by evaporation of the pyridine extracts as described above. The amount of coal converted to a pyridinesoluble product by the heat/tetralin treatment was 97% on a maf basis. The composition of the pyridine-soluble conversion product in terms of preasphaltenes (pyridine-soluble benzene-insoluble), asphaltenes (benzene-soluble, hexaneinsoluble) and oils (hexane-soluble) was 67,2 1.5 and 11.5 wt %, respectively. By comparison, a 40 mm treatment at 427'C of a Kentucky coal in the presence of a hydrogen-donor solvent yielded 93% of pyridine-soluble product which contained generally similar amounts of preasphaltenes, asphaltenes and oils'.

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