Investigation of retrogressive reactions leading to the carbonization of solvent-refined coal
作者： Paul C. Painter , Yoshio Yamada , Robert G. Jenkins , Michael M. Coleman , Philip L. Walker
DOI: 10.1016/0016-2361(79)90139-X
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摘要: Abstract The carbonization of solvent-refined coal (SRC) samples produced by the liquefaction an HVc bituminous has been studied. Carbonization conditions were 450 °C, 34.4 MPa, for 1 and 5 h hold times. original SRCs pyridine-insoluble fractions products have characterized Fourier-transform infrared spectroscopy. Spectral changes demonstrate that formation larger molecules during involve joining together aromatic originally present, without increasing their size significantly. This is accomplished elimination methylene units condensation phenolic functional groups present on in SRCs.
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