Abstract
Shengli coal, a Chinese brown coal, was extracted with carbon disulfide and the extract was gradiently eluted with n-hexane and ethyl acetate (EA)/ n-hexane mixed solvents with different concentrations of EA in a silica gel-filled column. A series of fatty acid amides, including fourteen alkanaimdes (C 15−C 28) and three alkenamides (C 18 and C 22), were isolated from the coal by this method and analyzed with a gas chromatography/mass spectrometry.
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