Generation of free radicals in partial oxidation of coal

Pyrolytic and oxidative treatments of two coals, Illinois No. 6 and Montour, have been performed between 140 and 400 °C. Free radical concentrations were followed by electron paramagnetic resonance as a function of time of treatment at a given temperature. Initial increases in the organic free radic...

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Veröffentlicht in:	Fuel (Guildford) 1985-01, Vol.64 (3), p.303-306
Hauptverfasser:	Cole, David A., Herman, Richard G., Simmons, Gary W., Klier, Kamil
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences coal e.p.r Energy Exact sciences and technology free radicals Fuel processing. Carbochemistry and petrochemistry Fuels partial oxidation Solid fuel processing (coal, coke, brown coal, peat, wood, etc.)
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Zusammenfassung:	Pyrolytic and oxidative treatments of two coals, Illinois No. 6 and Montour, have been performed between 140 and 400 °C. Free radical concentrations were followed by electron paramagnetic resonance as a function of time of treatment at a given temperature. Initial increases in the organic free radical concentrations were observed at all temperatures, but at the higher temperatures termination reactions caused the increase to be transient. Variations in the free radical concentrations of weathered and unweathered coal showed that the former produced a larger number of radicals. Possible effects due to native mineral matter are suggested.
ISSN:	0016-2361 1873-7153
DOI:	10.1016/0016-2361(85)90414-4