Antioxidant Activity of Asphaltene and Resinous Components in the Magnetic Field

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Abstract

Using the voltammetric method of oxygen electroreduction, an analysis of the antioxidant activity of resin-asphaltene components isolated from 2 crude oils of different compositions before and after exposure to a magnetic field was carried out. For the studied asphaltenes, weakly polar and polar resins, an increase or decrease in antioxidant activity is observed with increasing sample concentration in the background electrolyte solution. Petroleum antioxidants are part of a complex colloidal structural system and are associated with it by associative interactions that arise as a result of changes in the size and activity of associates of the petroleum system as a whole.

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About the authors

Yu. V. Loskutova

Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences

Author for correspondence.
Email: reoloil@ipc.tsc.ru
Russian Federation, Tomsk

N. V. Yudina

Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences

Email: natal@ipc.tsc.ru
Russian Federation, Tomsk

A. V. Lukyanets

Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences

Email: lukyanetsav@mail.ru
Russian Federation, Tomsk

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Supplementary files

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2. Fig. 1. Effect of magnetic influence on the component composition of (a) ST and (b) VC oils: 1 - ASF; 2 - BS; 3 - SBS

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3. Fig. 2. IR spectra of (a) asphaltenes, (b) benzene resins isolated from ST oil before and after magnetic influence: 1 - initial sample, 2 - after magnetic influence

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4. Fig. 3. Variation of the antioxidant activity criterion K from the concentration C of the sample in PE before and after magnetic influence of asphaltenes (a), benzene resins (b), alcohol-benzene resins (c) of oils: 1 - ex. ST, 2 - MV ST, 3 - ex. BK, 4 - MB BK

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5. Fig. 4. Maximum values of Kmax criterion of oil components of oil ST (a) and oil components of oil BK (b) before and after magnetic influence: 1 - ASF; 2 - BS; 3 - SBS

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