Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2560
Title: AP-TPR study of sulphur in coals subjected to mild oxidation. Part 1. Demineralised coals
Authors: KOZLOWSKI, Mieczyslaw
PIETRZAK, Robert 
Wachowska, H
YPERMAN, Jan 
Issue Date: 2002
Publisher: ELSEVIER SCI LTD
Source: FUEL, 81(18). p. 2397-2405
Abstract: Five samples of coal characterised by different degree of coalification and different content of sulphur have been subjected to oxidation in the dry phase and in aqueous media in order to determine the effect of oxidation on the sulphur groups. The transformations were studied by the classical chemical methods and by atmospheric pressure-temperature programmed reduction. It has been shown that the greatest changes in sulphur groups occurs in the case of the oxidation with HNO3 and peroxyacetic acid, while the air oxidation and the oxidation in the O-2/Na2CO3 system is much less effective. The oxidation leads to formation of sulphoxides, sulphones and sulphonic acids. The non-thiophene groups have been found much more susceptible to oxidation than the thiophene ones. (C) 2002 Elsevier Science Ltd. All rights reserved.
Notes: Adam Mickiewicz Univ Poznan, Fac Chem, PL-60780 Poznan, Poland. Limburgs Univ Ctr, Lab Appl Chem, IMO, B-3590 Diepenbeek, Belgium.Kozlowski, M, Adam Mickiewicz Univ Poznan, Fac Chem, Grunwaldzka 6, PL-60780 Poznan, Poland.
Keywords: coal; oxidation; sulphur; atmospheric pressure; temperature programmed reduction (AP-TPR)
Document URI: http://hdl.handle.net/1942/2560
ISSN: 0016-2361
e-ISSN: 1873-7153
DOI: 10.1016/S0016-2361(02)00199-0
ISI #: 000179001600011
Category: A1
Type: Journal Contribution
Validations: ecoom 2003
Appears in Collections:Research publications

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