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Title: | Transformations of sulphur compounds in high-sulphur coals during reduction in the potassium/liquid ammonia system | Authors: | KOZLOWSKI, Mieczyslaw Wachowska, H YPERMAN, Jan |
Issue Date: | 2003 | Publisher: | ELSEVIER SCI LTD | Source: | FUEL, 82(9). p. 1149-1153 | Abstract: | The two types of high-sulphur coals Mequinenza and Illinois No. 6, in the initial form and subjected to potassium/liquid ammonia reduction, were analysed by atmospheric pressure-temperature programmed reduction (AP-TPR) method. It has been shown that preliminary demineralisation was beneficial for AP-TPR measurements because of the removal of calcium compounds. The reduction of sulphides and disulphides in the potassium/liquid ammonia system was found to lead to formation of aromatic and aliphatic thiols. The presence of the latter is better manifested in the AP-TPR kinetograms when the measurements are performed in the presence of a special reducing mixture. It has been shown that the coal reduction in the potassium/liquid ammonia system apart from transformations of nonthiophene sulphur groups also leads to breaking up of the C-S bonds in some thiophene systems. (C) 2003 Elsevier Science Ltd. All rights reserved. | Notes: | Adam Mickiewicz Univ Poznan, Fac Chem, PL-60780 Poznan, Poland. Limburgs Univ Ctr, IMO, Lab Appl Chem, B-3590 Diepenbeek, Belgium.Kozlowski, M, Adam Mickiewicz Univ Poznan, Fac Chem, Grunwaldzka 6, PL-60780 Poznan, Poland. | Keywords: | coal; reduction; sulphur; atmospheric pressure-temperature programmed reduction method | Document URI: | http://hdl.handle.net/1942/2534 | ISSN: | 0016-2361 | e-ISSN: | 1873-7153 | DOI: | 10.1016/S0016-2361(03)00005-X | ISI #: | 000182464700015 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2004 |
Appears in Collections: | Research publications |
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