Studies of reduction and reductive alkylation of coals in the potassium/liquid ammonia system. 2. Characterization of coal extracts

The products of reduction and reductive alkylation of five demineralized coals run in a system of potassium/liquid ammonia were subject to extraction by methylene chloride and n-pentane. The paper reports infrared and nuclear magnetic resonance (n.m.r.) characteristics of the extracts and the result...

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Bibliographic Details
Published in:Fuel (Guildford) 1995-09, Vol.74 (9), p.1328-1332
Main Authors: Wachowska, Helena, Kozłowski, Mieczysław
Format: Article
Language:English
Subjects:
coal extracts
infrared
nuclear magnetic resonance
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Summary:The products of reduction and reductive alkylation of five demineralized coals run in a system of potassium/liquid ammonia were subject to extraction by methylene chloride and n-pentane. The paper reports infrared and nuclear magnetic resonance (n.m.r.) characteristics of the extracts and the results of their elemental analysis and molecular weight determination. Analysis of n.m.r. spectra of the extracts permitted determination of changes in their structural parameters from which inference is drawn about chemical transformations occurring in coals upon reduction and reductive alkylation.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(95)00087-L