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https://doi.org/10.1016/0016-2361(90)90326-l
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Cite Journal: Fuel |  Publication Date: Apr 1, 1990 |
 Citations: 56 |
Affiliation: University of Mosul
1H and 13C n.m.r. spectra of asphaltenes separated from a heavy crude oil using n-pentane at different temperatures were measured. Average molecular parameters and hypothetical structural models for these asphaltenes were proposed using n.m.r. measurements, calculated molecular weight of unit sheets and elemental analysis.
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