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Zhaotong lignite (ZL) was subjected to ethanolysis at 305°C to afford soluble portion 1 (SP1) and residue 1 (R1). R1 was ethanolyzed with NaOH at 305°C to obtain soluble portion 2 (SP2) and residue 2 (R2). SP2 was separated to extracts 1–3 (E1-E3) by sequential extraction with petroleum ether, carbon disulfide, and dichloromethane. SP1 and E1-E3 were analyzed with a gas chromatograph/mass spectrometer,...
Thermal dissolution of Zhaotong lignite in cyclohexane and methanol was conducted at 300°C for 2h. The yields of the resulting cyclohexane- and methanol-soluble portions (CHSP and MSP) are 10.1% and 24.3%, respectively. CHSP and MSP were analyzed with a gas chromatograph/mass spectrometer (GC/MS) and negative-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (FTICRMS)...
Ethanolysis of an ethanolyzed residue (ER) from Zhaotong lignite with NaOH was conducted to afford extracts 1–4 (E1–E4). The yields of E1–E4 are 47.1%, 10.6%, 3.0%, and 10.0%, respectively. All the extracts were analyzed with a negative-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (ESI FTICRMS). In addition, carbon skeleton structures in the ER were determined...
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