利用吡啶对内蒙古东胜褐煤进行了索氏抽提,通过FTIR分析其原煤及抽提残煤,用GC/MS分析研究了其吡啶抽提物的化学组成。结果表明:东胜褐煤的芳香度较低,含氧官能团丰富;抽提物主要由脂肪烃、芳香族化合物和含杂原子化合物组成。还检测到2种含硅有机物。最后,在抽提物中还发现了单质硫的存在。 Soxhlet extraction of Dongsheng lignite from Inner Mongolia was carried out by pyridine. The crude coal was analyzed by FTIR and the residual coal was extracted. The chemical composition of the pyridine extract was analyzed by GC / MS. The results show that Dongsheng lignite has low aromaticity and rich oxygen-containing functional groups. Extracts are mainly composed of aliphatic hydrocarbons, aromatic compounds and heteroatom-containing compounds. Two silicon-containing organic species were also detected. Finally, the presence of elemental sulfur was also found in the extract.