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In Situ Chemical Imaging of Asphaltene Precipitation from Crude Oil Induced by n -Heptane

โœ Scribed by Gabrienko, Anton A.; Lai, Chen H.; Kazarian, Sergei G.


Book ID
121447127
Publisher
American Chemical Society
Year
2014
Tongue
English
Weight
969 KB
Volume
28
Category
Article
ISSN
0887-0624

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Chemical structure of asphaltenes in hea
โœ Latif H. Ali; Khalid A. Al-Ghannam; Jasim M. Al-Rawi ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 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