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Catalytic hydroliquefaction of coal macerals: Comparison with raw coal
Author(s) -
DjegaMariadassou G.,
Brodzki D.,
Abou Akar A.,
Cagniant D.,
Miga K.
Publication year - 1994
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440180218
Subject(s) - maceral , coal , chemistry , raw material , tetralin , mineralogy , asphaltene , solvent , organic chemistry
Catalytic hydroliquefactions (HL) of two coals (Freyming, France and Point of Ayr, United Kingdom) and their macerals were studied in a microautoclave in the presence of an H‐donor solvent (tetralin). The main results of the study were related to (i) a comparison between the behaviours of such coals or macerals in the HL process; the two raw coals showed the same total conversion, and similar wt% of oil, asphaltene and preasphaltene fractions, (ii) the contribution of each maceral to the global coal liquid; the additive effect was checked, but no synergetic effect was found (using HL and the present type of liquid phase analysis) for a ‘synthetic coal’. Raw coals, vitrite and exinite had the same total conversion, whereas that for fusite was much lower, and (iii) a detailed identification of some individual compounds or of series of homologous compounds; this was made for oil fractions. 25% of these fractions were able to be investigated by GC/MS, i.e. 5–10 wt% of the initial coal. Concentrations of a large number of compounds were determined and compared from one maceral to another, and general tendencies could be deduced.