Chemical structure of asphaltenes in hea
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Latif H. Ali; Khalid A. Al-Ghannam; Jasim M. Al-Rawi
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Article
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1990
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Elsevier Science
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English
β 299 KB
H 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