Abstract

ORREGO, J.A.; CABANZO HERNANDEZ, R.  and  MEJIA-OSPINO, E.. Structural study of colombian coal by fourier transform infrared spectroscopy coupled to attenuated total reflectance (FTIR-ATR). Rev. mex. fis. [online]. 2010, vol.56, n.3, pp.251-254. ISSN 0035-001X.

The most important Colombian coals were studied using Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) Spectroscopy. The ATR-FTIR spectra were used to obtain structural parameters of coal and correlating these structural parameters with the rank of the coal. The structural parameters, methylene-methyl ratio (CH₂/CH₃), aromaticity factor (f _α), aliphatic-aromatic ratio (H_al /H_ar) were determined directly from the ATR-FTIR spectra and f_α was evaluated from spectra data and an elemental analysis in coals studied here. The aliphatic and aromatic regions were considered between 3000 - 2800 cm^-1 and 912 - 670 cm^-1, respectively.

Keywords : Coal FTIR-ATR; coal rank; colombian coal.

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