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Depolymerization of oxidized bituminous coals

✍ Scribed by Larry J. Darlage; J.P. Weidner; S.S. Block

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
724 KB
Volume
53
Category
Article
ISSN
0016-2361

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✦ Synopsis

Certain high-sulphur-containing, high-volatile bituminous (hvb) coals have been converted into products which are almost completely soluble in chloroform. These products were obtained by a series of reactions involving initial oxidation with 2N nitric acid, depolymerization with boron trifluoride-phenol, and acetylation. Solubility of the depolymerized coal decreased sharply when the nitric acid reaction was eliminated or was replaced with a hydrochloric acid treatment. The extent of oxidation by the nitric acid treatment is discussed. Also included in this investigation are a low-sulphur-containing hvb coal and a low-volatile bituminous coal. After depolymerization, the solubilities of these two coals in chloroform were comparatively low.

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