Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3861
Title: C-13 CP MAS NMR-STUDY OF CHANGES IN MOLECULAR MOBILITY OF A BITUMINOUS COAL DURING DESULFURIZATION
Authors: FRANCO, Dirk 
GELAN, Jan 
MARTENS, Harry 
VANDERZANDE, Dirk 
Majchrowicz, Bernard B.
Issue Date: 1992
Publisher: BUTTERWORTH-HEINEMANN LTD
Source: FUEL, 71(7). p. 751-754
Abstract: A bituminous coal has been treated with molten alkali at several reaction temperatures and for different lengths of time. The fate of pyrite and the organic sulphur functional groups during desulphurization was followed by the recently developed technique of temperature programmed reduction. From C-13 CP/MAS n.m.r. it is clear that there is a good correlation between the obtained structural parameters, carbon aromaticity and the fraction of the non-protonated aromatic fraction, and the relaxation times T2* H-1. The increased mobility in the aromatic structures confirms that the organic matrix is strongly modified when a high sulphur reduction is obtained.
Notes: FRANCO, DV, LIMBURGS UNIV CENTRUM,DEPT SBG,B-3590 DIEPENBEEK,BELGIUM.
Keywords: NMR; DESULFURIZATION; BITUMINOUS
Document URI: http://hdl.handle.net/1942/3861
DOI: 10.1016/0016-2361(92)90124-7
ISI #: A1992JA00700005
Type: Journal Contribution
Appears in Collections:Research publications

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