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烟煤的組成結构一直是煤化学討論的重要課題之一。前人的研究业已証实,煤主要是芳香结构体系。很多工作还指出煤中存在有环烷烃和石腊系的化合物。通过低沸点溶剂抽提及輕度氫化的工作,这些結論更得到了充分的証实。H.steinbrecher和R-D.Bebling对煤的苯和氯苯抽出物中石油醚可溶份用氧化鋁液体色譜进行了分离,并对每一段份进行了紅外、紫外光譜等分析,而在气焰煤中除了环烷烃、异构石腊等飽和烃外还发現有正构石腊族化合物存在。坂部等对日本夕张烟煤用
The composition of bituminous coal has always been one of the important topics in the coal chemistry discussion. Previous studies have confirmed that coal is mainly an aromatic structural system. Much work has also been done on the presence of naphthenic and paraffin-type compounds in coal. These conclusions have been fully confirmed through the work of low-boiling solvent extraction and mild hydrogenation. H.steinbrecher and RD.Bebling on the coal benzene and chlorobenzene extracted petroleum ether soluble fraction was separated by liquid chromatography on alumina and each section was analyzed by infrared and ultraviolet spectroscopy, Naphthenic hydrocarbons, isoparaffin wax and other saturated hydrocarbons found in the presence of a paraffin wax compound. Sakamoto, etc. on the evening of Japan’s bituminous coal