Energy & Fuels, Vol.22, No.4, 2419-2421, 2008
Isolation and identification of fatty acid amides from Shengli coal
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.