STRUCTURAL STUDY BY INFRARED-SPECTROSCOPY OF SOME PRETREATED COAL SAMPLES AND THEIR METHANOL-NAOH SOLUBILIZATION PRODUCTS

Authors
CAGNIANT D BIMER J SALBUT PD GRUBER R HENRION P KRZTON A
Citation
D. Cagniant et al., STRUCTURAL STUDY BY INFRARED-SPECTROSCOPY OF SOME PRETREATED COAL SAMPLES AND THEIR METHANOL-NAOH SOLUBILIZATION PRODUCTS, Fuel, 73(6), 1994, pp. 871-879
Citations number
31
Categorie Soggetti
Energy & Fuels","Engineering, Chemical
Journal title
Fuel → ACNP
ISSN journal
00162361
Volume
73
Issue
6
Year of publication
1994
Pages
871 - 879
Database
ISI
SICI code
0016-2361(1994)73:6<871:SSBIOS>2.0.ZU;2-V
Abstract
Several chemical treatments were applied to a vitrain sample. It is as sumed that structural modifications play an important role in subseque nt solubilization by a methanol-NaOH mixture. The gradual changes of t he main functional groups after chemical pretreatment and solubilizati on reaction were examined by Fourier transform infrared (FT-i.r.) and diffuse reflectance infrared (DRIFT) spectroscopy. The influence of th e structural changes on the behaviour of the samples in solvent extrac tion (conversion) has been studied by sonication experiments, carried out before and after pretreatment and solubilization reaction.