KFU. Card publication. EPR Study of Rotational Mobility of Vanadyl-Porphyrin Complexes in Crude Oil Asphaltenes: Probing the Effect of Thermal Treatment of Heavy Oils

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EPR STUDY OF ROTATIONAL MOBILITY OF VANADYL-PORPHYRIN COMPLEXES IN CRUDE OIL ASPHALTENES: PROBING THE EFFECT OF THERMAL TREATMENT OF HEAVY OILS

Form of presentation

Articles in international journals and collections

Year of publication

2014

Authors, employees of KFU

Biktagirov Timur Bulatovich, author

Vakhin Aleksey Vladimirovich, author

Gafurov Marat Revgerovich, author

Izotov Vladislav Viktorovich, author

Isakov Dinis Renatovich, author

Mamin Georgiy Vladimirovich, author

Orlinskiy Sergey Borisovich, author

Rodionov Aleksandr Aleksandrovich, author

Other authors

Volodin Mikhail Aleksandrovich

Bibliographic description in the original language

T. Biktagirov, M. R. Gafurov, M. Volodin, G.V. Mamin, A. Rodionov, V.V. Izotov, A. Vakhin, D. Isakov, and S. B. Orlinskii. EPR Study of Rotational Mobility of Vanadyl-Porphyrin Complexes in Crude Oil Asphaltenes: Probing the Effect of Thermal Treatment of Heavy Oils. Energy & Fuels 2014. 28 (10), 6683-6687. DOI: 10.1021/ef5017494 (2014)

Annotation

The structural properties of asphaltenes, especially related to the dynamics of their aggregation, have been investigated by different experimental and theoretical methods during the last decades. However, there are only few works devoted to study the dynamics of asphaltenes in native hydrocarbon environment. In this report we illustrate a possibility to use electron paramagnetic resonance (EPR) spectra of vanadyl porphyrins in asphaltenes for the qualitative and quantitative analysis of their rotational mobility in crude oil samples. Based on the simulation of the EPR spectra, a simple semi-empirical parameter sensitive to the transition between motional regimes is proposed. This mobility parameter can be potentially useful for the prediction and analysis of thermal influence on heavy oil reservoirs during the petroleum-production. It is found that the rotational correlation time of the complexes in heavy oil samples changes discontinuously with temperature. The observed jump could be

Keywords

Fossil Fuels, Spectroscopy, Crude oil, asphaltenes

The name of the journal

Energy and Fuels

URL

http://pubs.acs.org/doi/abs/10.1021/ef5017494

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=86575&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Biktagirov Timur Bulatovich	ru_RU
dc.contributor.author	Vakhin Aleksey Vladimirovich	ru_RU
dc.contributor.author	Gafurov Marat Revgerovich	ru_RU
dc.contributor.author	Izotov Vladislav Viktorovich	ru_RU
dc.contributor.author	Isakov Dinis Renatovich	ru_RU
dc.contributor.author	Mamin Georgiy Vladimirovich	ru_RU
dc.contributor.author	Orlinskiy Sergey Borisovich	ru_RU
dc.contributor.author	Rodionov Aleksandr Aleksandrovich	ru_RU
dc.date.accessioned	2014-01-01T00:00:00Z	ru_RU
dc.date.available	2014-01-01T00:00:00Z	ru_RU
dc.date.issued	2014	ru_RU
dc.identifier.citation	T. Biktagirov, M. R. Gafurov, M. Volodin, G.V. Mamin, A. Rodionov, V.V. Izotov, A. Vakhin, D. Isakov, and S. B. Orlinskii. EPR Study of Rotational Mobility of Vanadyl-Porphyrin Complexes in Crude Oil Asphaltenes: Probing the Effect of Thermal Treatment of Heavy Oils. Energy & Fuels 2014. 28 (10), 6683-6687. DOI: 10.1021/ef5017494 (2014)	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=86575&p_lang=2	ru_RU
dc.description.abstract	Energy and Fuels	ru_RU
dc.description.abstract	The structural properties of asphaltenes, especially related to the dynamics of their aggregation, have been investigated by different experimental and theoretical methods during the last decades. However, there are only few works devoted to study the dynamics of asphaltenes in native hydrocarbon environment. In this report we illustrate a possibility to use electron paramagnetic resonance (EPR) spectra of vanadyl porphyrins in asphaltenes for the qualitative and quantitative analysis of their rotational mobility in crude oil samples. Based on the simulation of the EPR spectra, a simple semi-empirical parameter sensitive to the transition between motional regimes is proposed. This mobility parameter can be potentially useful for the prediction and analysis of thermal influence on heavy oil reservoirs during the petroleum-production. It is found that the rotational correlation time of the complexes in heavy oil samples changes discontinuously with temperature. The observed jump could be	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Fossil Fuels	ru_RU
dc.subject	Spectroscopy	ru_RU
dc.subject	Crude oil	ru_RU
dc.subject	asphaltenes	ru_RU
dc.title	EPR Study of Rotational Mobility of Vanadyl-Porphyrin Complexes in Crude Oil Asphaltenes: Probing the Effect of Thermal Treatment of Heavy Oils	ru_RU
dc.type	Articles in international journals and collections	ru_RU