Fuel Science & Technology International, Vol.13, No.8, 973-990, 1995
SOLVENT-EXTRACTION OF PAKISTAN COALS .3. EXTRACTION AND CHARACTERIZATION OF THF EXTRACTS BY SPECTROSCOPIC TECHNIQUES
The Makerwal coal of Pakistan gives higher extractibility with Tetrahydrofuran (THF) as compared to Sharigh, Sor-Range and Lakhra coals. The structural characterization of Pakistan coal extracts by FT-IR spectroscopy indicates that all the extracts contained less condensed aromatic rings in comparison to their original coal.