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Asphaltene association in crude oil as studied by ENDOR

✍ Scribed by Valeri E. Galtsev; Igor M. Ametov; Oleg Ya. Grinberg

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
477 KB
Volume
74
Category
Article
ISSN
0016-2361

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Chemical structure of asphaltenes in hea
Chemical structure of asphaltenes in heavy crude oils investigated by n.m.r.
✍ Latif H. Ali; Khalid A. Al-Ghannam; Jasim M. Al-Rawi πŸ“‚ Article πŸ“… 1990 πŸ› Elsevier Science 🌐 English βš– 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