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A novel solid acid was prepared by impregnating trifluoromethanesulfonic acid (TFMSA) onto mesoporous ZrO2 coated attapulgite (MPZCA) via one-pot synthesis method. Dibenzyl ether (DBE) was used as a coal-related model compound to evaluate the catalytic activity of TFMSA/MPZCA for cleaving Calk–O bridged bonds in low-rank coals. The results show that DBE conversion over TFMSA/MPZCA could reach 100%...
Organonitrogen and organooxygen compounds (ONCs and OOCs) in the extraction residue (ER) from Buliangou subbituminous coal were characterized with an electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (ESI FTICRMS). Pyrrolic and hydroxy are the most abundant nitrogen and oxygen moieties on the ER surface according to analysis with an X-ray photoelectron spectrometer...
Buliangou subbituminous coal (BSBC) was sequentially extracted with carbon disulfide, methanol, and acetone under ultrasonic irradiation to afford extracts 1–3 (E1–E3). All the extracts were analyzed with a positive-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS). In total, 11.11% of organic matter in BSBC was extracted with the three solvents...
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