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Chemical structure of asphaltenes in heavy crude oils investigated by n.m.r.

✍ Scribed by Latif H. Ali; Khalid A. Al-Ghannam; Jasim M. Al-Rawi

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
299 KB
Volume
69
Category
Article
ISSN
0016-2361

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✦ Synopsis

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 and elemental analysis.

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