Sulphur distribution in Illinois no. 6 coal subjected to different oxidation pre-treatments

The effect of different oxidation pre-treatments on the sulphur distribution in Illinois No. 6 coal (IBC-101) was studied using Atmospheric Pressure-Temperature Programmed Reduction (AP-TPR). Oxidation pre-treatments were carried out on demineralized coal with peroxyacetic acid (PAA) as a function o...

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Bibliographic Details
Published in:Fuel (Guildford) 1997-11, Vol.76 (14), p.1377-1381
Main Authors: Van Aelst, J., Yperman, J., Franco, D.V., Mullens, J., Van Poucke, L.C., Palmer, S.R.
Format: Article
Language:English
Subjects:
Applied sciences
Coal and derived products
coal oxidation
Energy
Exact sciences and technology
Fuels
Structure, chemical and physical properties
sulphur forms
temperature programmed reduction
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Summary:The effect of different oxidation pre-treatments on the sulphur distribution in Illinois No. 6 coal (IBC-101) was studied using Atmospheric Pressure-Temperature Programmed Reduction (AP-TPR). Oxidation pre-treatments were carried out on demineralized coal with peroxyacetic acid (PAA) as a function of reaction time. For the longest reaction time the effect of PAA on the coal was compared to the effect of several other oxidants. AP-TPR results also show a clear effect of LiAlH 4 on the coal. Not only is pyrite removed, but there is also a decrease in other sulphur forms. Subsequent PAA oxidation causes an overall decrease of the AP-TPR signal, signifying the attack on organic as well as inorganic sulphur forms. With other oxidants, under the same conditions, only minor differences could be found after different treatments.
ISSN:0016-2361
1873-7153
DOI:10.1016/S0016-2361(97)00148-8