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- W2055661639 abstract "Chemical reduction of bitumen and asphaltenes derived from a Spanish lignite depolymerized with BF3 in phenol has been achieved by lithium in ethylamine. The extent of the reduction has been evaluated by means of elemental analysis and 1H NMR spectroscopy, and some structural features have been established for the reduced products. After eight hours of reaction, the aromatic hydrogen content showed a large decrease, which was greater for asphaltenes than for bitumen. Structural parameters indicated for the treated samples that a half of the aromatic nuclei have been hydrogenated. 1H NMR and IR spectroscopic data show a similar behaviour of asphaltenes and bitumen in the reduction process." @default.
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- W2055661639 date "1988-01-01" @default.
- W2055661639 modified "2023-09-24" @default.
- W2055661639 title "Study of lignite catalytic depolymerization products. Chemical reduction of asphaltenes and toluene extract" @default.
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- W2055661639 doi "https://doi.org/10.1016/0378-3820(88)90040-9" @default.
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