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Characterization of a complex mixture of aromatic and heterocyclic acids obtained from oxidation of lignite coal and its solvent-refined products

This study reports the results from the oxidation, using sodium dichromate, of a solvent-refined lignite (SRL) and its feed coal and the effects of varying the ratio of oxidant to coal. The numerous aromatic and heteroaromatic carboxylic acids isolated were identified as their methyl esters by g.c./...

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Bibliographic Details
Published in:Fuel (Guildford) 1980-01, Vol.59 (2), p.97-101
Main Authors: Duty, Robert C., Hayatsu, Ryoichi, Scott, Robert G., Moore, Leon P., Winans, Randall E., Studier, Martin H.
Format: Article
Language:English
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Summary:This study reports the results from the oxidation, using sodium dichromate, of a solvent-refined lignite (SRL) and its feed coal and the effects of varying the ratio of oxidant to coal. The numerous aromatic and heteroaromatic carboxylic acids isolated were identified as their methyl esters by g.c./m.s. and h.r.m.s. Oxidation of SRL with a limited amount of dichromate yielded a large number of polycyclic aromatic and heteroaromatic acids not found in the oxidation of the lignite. These results indicate that the SRL process produces highly-condensed aromatic molecules.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(80)90048-4