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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...
Bio-oils (BOs) obtained from sweet sorghum stalk (SSS) methanolysis (BOm) and ethanolysis (BOe) at 300°C for 30min were analyzed with an electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (ESI FT-ICR MS). In negative-ion mode, the predominant compounds in BOm and BOe are On (n=1–10) class species with double bond equivalent (DBE) values of 1–14 and carbon atom numbers...
Ethanol-soluble portion (ESP) from Zhaotong lignite ethanolysis at 305°C was analyzed with a positive-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS). The range of molecular mass distribution is from m/z 100 to 600 with the center around m/z 330. Assignment of molecular formulae reveals that the main nitrogen-containing species with relative...
Thermal dissolution of Zhaotong lignite in ethanol was conducted in a temperature range of 230 to 350°C for 2h. The maximum yield of the ethanol-soluble portion (ESP) is 64.9% at 305°C. ESP was analyzed with a negative-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS). Molecular mass of ESP ranges from 100 to 500 u with an average peak around m/z 260...
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