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Chemical visualization of asphaltenes aggregation processes studied in situ with ATR-FTIR spectroscopic imaging and NMR imaging / A. A. Gabrienko [et al.] // J. Phys. Chem. C. - 2015. - Vol. 119, Is. 5. - P. 2646-2660, DOI 10.1021/jp511891f. - Cited References:78. - This research was performed under the UNIHEAT project. The authors wish to acknowledge the Skolkovo Foundation and BP for financial support. The authors thank BP for providing samples of crude oil . - ISSN 1932-7447

РУБ Chemistry, Physical + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary
Рубрики:
MEXICAN CRUDE OILS
   X-RAY-DIFFRACTION
   INFRARED-SPECTROSCOPY
   PETROLEUM ASPHALTENES
   MOLECULAR-DYNAMICS
   VARIABLE SELECTION
   ORGANIC-SOLVENTS
   LIGHT-SCATTERING
   N-HEPTANE
   NEAR-IR
Аннотация: Crude oil phase behavior and asphaltene precipitation have been studied by two complementary chemical imaging methods for the first time. ATR-FTIR spectroscopic imaging approach has revealed the chemical composition of agglomerated and precipitated asphaltenes upon dilution with a flocculant. Asphaltenes, containing oxygen and nitrogen heteroatomic functional groups, have been detected to be least stable. Aromatic abundant asphaltenes have been observed to have relatively high solubility in crude oil/heptane blends. NMR imaging approach, capable of imaging in the bulk of crude oil samples, has demonstrated that n-heptane causes aggregation which can lead to the stable suspension or to the sedimentation followed by the formation of deposits, depending on flocculant concentration. These processes have been monitored for small and large amounts of heptane added to crude oil. The data obtained by ATR-FTIR spectroscopic imaging and NMR imaging have been correlated to propose a possible link between the chemical structure of asphaltenes and a mechanism of the formation of deposits.

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Держатели документа:
Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London SW7 2AZ, England.
Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk 630090, Russia.
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
UNICAT Ltd, Novosibirsk 630090, Russia.
BP Prod North Amer Inc, Refining & Logist Technol, Naperville, IL 60563 USA.
Novosibirsk State Univ, Novosibirsk 630090, Russia.

Доп.точки доступа:
Gabrienko, A. A.; Morozov, E. V.; Морозов, Евгений Владимирович; Subramani, V.; Martyanov, O. N.; Kazarian, S. G.; Skolkovo Foundation; BP
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