Molecular spectroscopy analysis of Alagtolgoi coal

Abstract

Currently, it is presented the results of a Fourier transform infrared (FTIR) of Alagtogoo (brown coal, abbreviated as At) coal. SEM analysis proved the existence of heavy elements in the coal. Predominantly, they are silicon, aluminum, calcium, iron and oxygen in various compounds. Lesser amounts of the elements iron, magnesium, manganese and sulfur were observed.

Absorptions are spread in the long-wave (2000-400 cm^-1) and short-wave (4000-2500 cm^­') zones of the FTIR spectrum. An intensity of the oxygen contained groups in the long wave zone and hydroxyl group band at 3400 cm^-1 were significant in the coal. Shoulder peaks and the remarkable intensity were noted for the stretching C-Hal bands in the short wave zone and bending а(СH₃) bands in the long wave zones.