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Organic sulphur in coal, IEACR/60
Author(s): Robert Davidson
Price: £60.00
Ref: IEACR/60 |
No. of Tables: 19 |
Literature on organic sulphur in coal produced mostly since 1980 is reviewed. The review begins with an examination of the standard (ASTM) methods for determining the quantity of total organic sulphur in a coal sample; newer methods of accomplishing this; and the variations in sulphur content in the different macerals. The question of the presence of elemental sulphur in coal is addressed. Methods of identifying organic sulphur species present in coal are discussed; these mainly involve the use of gas chromatography and mass spectroscopy. Chemical methods for quantifying organic sulphur forms involve flash pyrolysis, temperature programmed reduction, and temperature programmed oxidation. The data obtained by these means are assessed. Newer methods of instrumental analysis involving X-ray spectroscopy are considered and the results compared with those obtained from chemical analysis. Finally, the application of our knowledge of organic sulphur chemistry to the assessment of desulphurisation stratagems is briefly examined. It is concluded that while there has been much progress there is scope for further study of the quantity and form of organic sulphur in coal. Attention should also be paid to the choice of model compounds used to interpret the data.
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