Characterization of Extracts from Geting Bituminous Coal

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Abstract
Geting bituminous coal (GBC) was exhaustively extracted with isometric carbon disulfide/acetone at ambient temperature to provide twenty extracts and a residue. The extracts were characterized by gas chromatography/mass spectrometry (GC/MS), Fourier transform infrared spectroscopy, and atmospheric pressure solids analysis probe time-of-flight mass spectrometry. GBC and its residue were observed with a scanning electron microscope. The total extract yield is ca. 11.5%. The GC/MS-detectable compounds in extract 1 can be classified into alkanes, cyclanes, arenes, cyclenes, and heteroatomic compounds, among which arenes are predominant. The number of detected compounds decreases and they have higher molecular masses with increasing extraction times. The combination of multiple techniques facilitates understanding the molecular composition of the extractable species from coals.
Funding Information
  • This work was supported by National Basic Research Program of China (Grant 2011CB201302), the Fund from National Natural Science Foundation of China for Innovative Research Group (Grant 51221462), the Key Project of Coal Joint Fund from National Natural S

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