Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3029
Title: Reduction of high-sulphur coal in the potassium-liquid ammonia system
Authors: KOZLOWSKI, Mieczyslaw
MAES, Inge
Wachowska, H
YPERMAN, Jan 
FRANCO, Dirk 
MULLENS, Jules 
VAN POUCKE, Lucien 
Issue Date: 1999
Publisher: ELSEVIER SCI LTD
Source: FUEL, 78(7). p. 769-774
Abstract: Polish high-sulphur coal was twice subjected to reduction in the potassium-liquid ammonia system. The process was carried out on both raw and demineralised coal. Elemental and spectral analyses of the initial coal and the reduction products were performed. Different forms of sulphur found in the samples were studied by the classical chemical methods and by atmospheric pressure-temperature programmed reduction (AP-TPR). The effect of reduction on particular sulphur compounds is discussed. It was found that reduction in the potassium-liquid ammonia system led to cleavage of C-S bonds, appearance of thiol groups, and the partial removal of pyrite and sulphates from the coal whereas the content of elemental sulphur did not change significantly. (C) 1999 Elsevier Science Ltd. All rights reserved.
Notes: Limburgs Univ Ctr, IMO, Lab Inorgan & Phys Chem, B-3590 Diepenbeek, Belgium. Adam Mickiewicz Univ, Fac Chem, PL-60780 Poznan, Poland.Yperman, J, Limburgs Univ Ctr, IMO, Lab Inorgan & Phys Chem, Univ Campus, B-3590 Diepenbeek, Belgium.
Keywords: coal; sulphur; reduction; temperature programmed reduction (TPR)
Document URI: http://hdl.handle.net/1942/3029
DOI: 10.1016/S0016-2361(98)00206-3
ISI #: 000079911100004
Type: Journal Contribution
Validations: ecoom 2000
Appears in Collections:Research publications

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