Chemical Visualization of Asphaltenes Aggregation Processes Studied in Situ with ATR-FTIR Spectroscopic Imaging and NMR Imaging | Sciact - CRIS-system of Boreskov Institute of Catalysis

Chemical Visualization of Asphaltenes Aggregation Processes Studied in Situ with ATR-FTIR Spectroscopic Imaging and NMR Imaging Full article

Journal

The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455

Output data

Year: 2015, Volume: 119, Number: 5, Pages: 2646-2660 Pages count : 15 DOI: 10.1021/jp511891f

Tags

Aggregation process Asphaltene precipitation Chemical compositions Chemical imaging Flocculant concentrations High solubility Oxygen and nitrogens Stable suspensions

Authors

Gabrienko Anton A. ^1,2 , Morozov Evgeny V. ^3,4,5 , Subramani Velu ⁶ , Martyanov Oleg N. ^2,7 , Kazarian Sergei G. ¹

Affiliations

1	Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, United Kingdom SW7 2AZ
2	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090, Russia
3	Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/24, Krasnoyarsk 660036, Russia
4	Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk 660036, Russia
5	UNICAT Ltd., Akademika Lavrentieva 5, Novosibirsk 630090, Russia
6	BP Products North America, Inc. Refining and Logistics Technology, Naperville, Illinois 60563, United States
7	Novosibirsk State University, Pirogova street 2, Novosibirsk 630090, Russia

Funding (3)

1	Federal Agency for Scientific Organizations	V.44.1.15.
2	Skolkovo Foundation
3	BP Products North America, Inc.

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.

Gabrienko A.A. , Morozov E.V. , Subramani V. , Martyanov O.N. , Kazarian S.G.
Chemical Visualization of Asphaltenes Aggregation Processes Studied in Situ with ATR-FTIR Spectroscopic Imaging and NMR Imaging
The Journal of Physical Chemistry C. 2015. V.119. N5. P.2646-2660. DOI: 10.1021/jp511891f WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Nov 28, 2014
Published online:	Jan 23, 2015
Published print:	Feb 5, 2015

Web of science:	WOS:000349136400046
Scopus:	2-s2.0-84949115934
Elibrary:	43198776
Chemical Abstracts:	2015:46692
Chemical Abstracts (print):	162:234808
OpenAlex:	W2321307370

DB	Citing
Web of science	49
Scopus	50
Elibrary	55
OpenAlex	46