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- W2489252808 abstract "Two coal liquid products derived from the same Kentucky hvAb coal have been separated into toluene-insoluble, asphaltene, and pentane-soluble heavy oil fractions. Viscosity and calorimetric studies are reported of the interaction between heavy oil and asphaltene(A) and its acid/neutral(AA) and base(BA) components in solvent benzene. The increase in viscosity and molar enthalpy of interaction, {Delta}H{sup 0}, in the order BA>A>AA, correlate well with the proton magnetic resonance downfield chemical shift of the OH signal of o-phenylphenol, as a function of added asphaltene (A, AA, BA) concentration in solvent CS{sub 2}· The results suggest that when asphaltene .and heavy oil are present together, hydrogen-bonding involving largely phenolic OH, is one of the mechanisms by which asphaltene-heavy oil interactions are achieved and, in part, is responsible for the viscosity increase of coal liquids." @default.
- W2489252808 created "2016-08-23" @default.
- W2489252808 creator A5065930378 @default.
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- W2489252808 date "1978-09-29" @default.
- W2489252808 modified "2023-09-26" @default.
- W2489252808 title "Hydrogen bonding in asphaltenes and coal. Quarterly Report for July 1, 1978 - September 30, 1978" @default.
- W2489252808 doi "https://doi.org/10.2172/1073609" @default.
- W2489252808 hasPublicationYear "1978" @default.
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