In Situ FTIR Spectroscopic Imaging of Asphaltene Deposition from Crude Oil under n-Heptane and Acetone Flows Full article
| Journal |
Petroleum Chemistry
ISSN: 0965-5441 , E-ISSN: 1531-8532 |
||||||
|---|---|---|---|---|---|---|---|
| Output data | Year: 2022, Volume: 62, Number: 9, Pages: 1087-1095 Pages count : 9 DOI: 10.1134/s0965544122090079 | ||||||
| Tags | crude oil, asphaltenes, n-heptane, acetone, microfluidic device, FTIR spectroscopic imaging, chemical imaging | ||||||
| Authors |
|
||||||
| Affiliations |
|
Funding (1)
| 1 | Russian Science Foundation | 20-79-00183 |
Abstract:
Asphaltene deposition from crude oil, induced by n-heptane and acetone flows in a microfluidic device, was studied by optical and FTIR spectroscopic imaging techniques in situ. It was found that n-heptane and acetone penetrate crude oil in completely different ways, which is responsible for the formation of deposits with different structures and chemical compositions. The contact of the n-heptane flow with crude oil leads to fast aggregation of asphaltenes at the interface, resulting in the formation of a compact deposit fixed to the surface. Subsequent slow diffusion of n-heptane into crude oil causes asphaltene aggregation and precipitation of loose deposits. In the case of acetone, the flocculant diffuses (faster than n-heptane) into crude oil, which results in removal of its soluble components and in the formation of deposits appearing as strips as well. The distribution of the functional groups (–OH(NH), CH2–CH3, C=O, C–O, S=O) in the deposits is spatially heterogeneous. The asphaltenes deposits formed at the flocculant-crude oil interface are richer in the functional groups than those formed during diffusion. No carbonyl groups were revealed in the deposits formed in the acetone flow, while oxygen-containing groups such as –OH(NH) and S=O were present, which was an unusual result.
Cite:
Shalygin A.S.
, Milovanov E.S.
, Kovalev E.P.
, Yakushkin S.S.
, Kazarian S.G.
, Martyanov O.N.
In Situ FTIR Spectroscopic Imaging of Asphaltene Deposition from Crude Oil under n-Heptane and Acetone Flows
Petroleum Chemistry. 2022. V.62. N9. P.1087-1095. DOI: 10.1134/s0965544122090079 WOS Scopus РИНЦ AN OpenAlex
In Situ FTIR Spectroscopic Imaging of Asphaltene Deposition from Crude Oil under n-Heptane and Acetone Flows
Petroleum Chemistry. 2022. V.62. N9. P.1087-1095. DOI: 10.1134/s0965544122090079 WOS Scopus РИНЦ AN OpenAlex
Original:
Шалыгин А.С.
, Милованов Е.С.
, Ковалев Е.П.
, Якушкин С.С.
, Казарян С.Г.
, Мартьянов О.Н.
Исследование осаждения асфальтенов из нефти потоком н-гептана и ацетона методом химической визуализации в режиме in situ
Нефтехимия. 2022. Т.62. №6. С.837-846. DOI: 10.31857/S0028242122060065 РИНЦ OpenAlex
Исследование осаждения асфальтенов из нефти потоком н-гептана и ацетона методом химической визуализации в режиме in situ
Нефтехимия. 2022. Т.62. №6. С.837-846. DOI: 10.31857/S0028242122060065 РИНЦ OpenAlex
Dates:
| Submitted: | Jun 21, 2022 |
| Accepted: | Aug 16, 2022 |
| Published print: | Sep 1, 2022 |
| Published online: | Nov 11, 2022 |
Identifiers:
| Web of science: | WOS:000882003800008 |
| Scopus: | 2-s2.0-85141792422 |
| Elibrary: | 50321343 |
| Chemical Abstracts: | 2022:2871785 |
| OpenAlex: | W4312438364 |