Composition of the Resin-Asphaltene Components in the Interfacial Layers of Water-in-Oil Emulsions.
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| Title: | Composition of the Resin-Asphaltene Components in the Interfacial Layers of Water-in-Oil Emulsions. |
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| Authors: | Yudina, N. V.1 (AUTHOR) natal@ipc.tsc.ru, Nebogina, N. A.1 (AUTHOR), Prozorova, I. V.1 (AUTHOR) |
| Source: | Petroleum Chemistry. May2021, Vol. 61 Issue 5, p568-575. 8p. |
| Subjects: | Heavy oil, Asphaltene, Petroleum, Emulsions, Methylene group, Stabilizing agents |
| Abstract: | Formation of stable water-in-oil emulsions in light and heavy crude oils was shown to involve the buildup of interfacial layer characterized by increased contents of the main emulsifiers, asphaltenes and resins. An increase in the proportion of asphaltenes in the interfacial layer, nearly 4-fold for the light oil and 1.3-fold for the heavy oil samples, was accompanied by changes in their elemental and structural-group compositions. The proportions of resins in the interfacial layers exceeded by 25–86% those in the original oils. IR-spectroscopic examination revealed increases in the concentration of carboxy and methylene groups in the asphaltenes and resins from the interfacial layer of the light oil and in the concentration of sulfoxide and carboxy groups from the interfacial layer of the heavy sulfurous oil. The dependence of the surface activity of resins and asphaltenes on pH of the aqueous phase was elucidated. Asphaltenes and resins exhibited decreases in interfacial tension (2.3–3.2-fold maximum) in the pH range 10–12 compared to pH range 4–6, which was due to neutralization of their constituent carboxy groups. Reduction of the interfacial tension in the acidic region was attributed to the presence of sulfoxide groups, possessing the properties of weak bases, in the emulsifiers. [ABSTRACT FROM AUTHOR] |
| Copyright of Petroleum Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 150972865 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Composition of the Resin-Asphaltene Components in the Interfacial Layers of Water-in-Oil Emulsions. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yudina%2C+N%2E+V%2E%22">Yudina, N. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> natal@ipc.tsc.ru</i><br /><searchLink fieldCode="AR" term="%22Nebogina%2C+N%2E+A%2E%22">Nebogina, N. A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Prozorova%2C+I%2E+V%2E%22">Prozorova, I. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Petroleum+Chemistry%22">Petroleum Chemistry</searchLink>. May2021, Vol. 61 Issue 5, p568-575. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Heavy+oil%22">Heavy oil</searchLink><br /><searchLink fieldCode="DE" term="%22Asphaltene%22">Asphaltene</searchLink><br /><searchLink fieldCode="DE" term="%22Petroleum%22">Petroleum</searchLink><br /><searchLink fieldCode="DE" term="%22Emulsions%22">Emulsions</searchLink><br /><searchLink fieldCode="DE" term="%22Methylene+group%22">Methylene group</searchLink><br /><searchLink fieldCode="DE" term="%22Stabilizing+agents%22">Stabilizing agents</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Formation of stable water-in-oil emulsions in light and heavy crude oils was shown to involve the buildup of interfacial layer characterized by increased contents of the main emulsifiers, asphaltenes and resins. An increase in the proportion of asphaltenes in the interfacial layer, nearly 4-fold for the light oil and 1.3-fold for the heavy oil samples, was accompanied by changes in their elemental and structural-group compositions. The proportions of resins in the interfacial layers exceeded by 25–86% those in the original oils. IR-spectroscopic examination revealed increases in the concentration of carboxy and methylene groups in the asphaltenes and resins from the interfacial layer of the light oil and in the concentration of sulfoxide and carboxy groups from the interfacial layer of the heavy sulfurous oil. The dependence of the surface activity of resins and asphaltenes on pH of the aqueous phase was elucidated. Asphaltenes and resins exhibited decreases in interfacial tension (2.3–3.2-fold maximum) in the pH range 10–12 compared to pH range 4–6, which was due to neutralization of their constituent carboxy groups. Reduction of the interfacial tension in the acidic region was attributed to the presence of sulfoxide groups, possessing the properties of weak bases, in the emulsifiers. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Petroleum Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1134/S0965544121060050 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 568 Subjects: – SubjectFull: Heavy oil Type: general – SubjectFull: Asphaltene Type: general – SubjectFull: Petroleum Type: general – SubjectFull: Emulsions Type: general – SubjectFull: Methylene group Type: general – SubjectFull: Stabilizing agents Type: general Titles: – TitleFull: Composition of the Resin-Asphaltene Components in the Interfacial Layers of Water-in-Oil Emulsions. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yudina, N. V. – PersonEntity: Name: NameFull: Nebogina, N. A. – PersonEntity: Name: NameFull: Prozorova, I. V. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 09655441 Numbering: – Type: volume Value: 61 – Type: issue Value: 5 Titles: – TitleFull: Petroleum Chemistry Type: main |
| ResultId | 1 |
