Generation of free radicals in partial oxidation of coal

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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container_end_page 306
container_issue 3
container_start_page 303
container_title Fuel (Guildford)
container_volume 64
creator Cole, David A.
Herman, Richard G.
Simmons, Gary W.
Klier, Kamil
description 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.
doi_str_mv 10.1016/0016-2361(85)90414-4
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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.</description><identifier>ISSN: 0016-2361</identifier><identifier>EISSN: 1873-7153</identifier><identifier>DOI: 10.1016/0016-2361(85)90414-4</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; coal ; e.p.r ; Energy ; Exact sciences and technology ; free radicals ; Fuel processing. 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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.</description><subject>Applied sciences</subject><subject>coal</subject><subject>e.p.r</subject><subject>Energy</subject><subject>Exact sciences and technology</subject><subject>free radicals</subject><subject>Fuel processing. 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source Elsevier ScienceDirect Journals
subjects 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.)
title Generation of free radicals in partial oxidation of coal
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