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- Zhang, Xiangping, et al. Show all 6 Authors
- RSC advances 2011 v.1 no.8 pp. 1579-1584
- Fourier transform infrared spectroscopy; carbon fibers; coal; hydrogen bonding; inorganic matter; ionic liquids; liquefaction; nuclear magnetic resonance spectroscopy; pyrrolidones; raw materials
- ... A novel solvent mainly consisting of ionic liquid 1-butyl-3-methylimidazolium chloride ([bmim]Cl) and N-methyl pyrrolidinone (NMP), was used to treat Direct Coal Liquefaction Residue (DCLR). The aim was to extract an important organic precursor compound from the DCLR as the raw material of carbon fibers. The performance of extraction and properties of the extract with the mixed solvent were analyz ...