Abstract
In 1981 Solomon proposed a method of estimating aromatic carbon content of bituminous coals from their FTIR data and showed its correlation with the experimentally observed fixed carbon (FC). Present work aims to study the applicability of Solomon's method to five Indian lignites, viz. one Neyveli lignite and four Barmer (area Mahabarshivkur, Barmer, Rajasthan) lignite samples collected from four different locations. It is revealed that Solomon's method of ascertaining aromatic carbon content is also applicable to lignites with slight modification. Excellent correlation has been observed between aromatic carbon content C ar and fixed carbon FC. Moreover, distribution of hydrogen in Indian lignites are studied and their gasification ability are predicted using Pradier's method in terms of the ratio of integral intensity of streching modes of (CH 2 /CH 2 + CH 3 ) in the region of 2800-3000 cm -1 . Observed bands are assigned according to Painter et al. Peculiarly enough, no band at or around 3030 cm -1 assigned to aromatic C-H streching was observed in case of Neyveli and Barmer lignite B.
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