Asphaltene Adsorption on Functionalized Solids
Asphaltenes, heavy aromatic components of crude oil, are known to adsorb on surfaces and can lead to pipe clogging or hinder oil recovery. Because of their multicomponent structure, the details of their interactions with surfaces are complex. We investigate the effect of the physicochemical properti...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Chemical Society (ACS)
2020
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| Online Access: | https://hdl.handle.net/1721.1/125690 |
| _version_ | 1811071813560565760 |
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| author | Girard, Henri-Louis Bourrianne, Philippe Chen, Dayong Cohen, Robert E |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Girard, Henri-Louis Bourrianne, Philippe Chen, Dayong Cohen, Robert E |
| author_sort | Girard, Henri-Louis |
| collection | MIT |
| description | Asphaltenes, heavy aromatic components of crude oil, are known to adsorb on surfaces and can lead to pipe clogging or hinder oil recovery. Because of their multicomponent structure, the details of their interactions with surfaces are complex. We investigate the effect of the physicochemical properties of the substrate on the extent and mechanism of this adsorption. Using wetting measurements, we relate the initial kinetics of deposition to the interfacial energy of the surface. We then quantify the long-term adsorption dynamics using a quartz crystal microbalance and ellipsometry. Finally, we investigate the mechanism and morphology of adsorption with force spectroscopy measurements as a function of surface chemistry. We determine different adsorption regimes differing in orientation, packing density, and initial kinetics on different substrate functionalizations. Specifically, we find that alkane substrates delay the initial monolayer formation, fluorinated surfaces exhibit fast adsorption but low bonding strength, and hydroxyl substrates lead to a different adsorption orientation and a high packing density of the asphaltene layer. |
| first_indexed | 2024-09-23T08:56:34Z |
| format | Article |
| id | mit-1721.1/125690 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:56:34Z |
| publishDate | 2020 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1256902022-09-26T09:21:57Z Asphaltene Adsorption on Functionalized Solids Girard, Henri-Louis Bourrianne, Philippe Chen, Dayong Cohen, Robert E Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Department of Chemical Engineering Asphaltenes, heavy aromatic components of crude oil, are known to adsorb on surfaces and can lead to pipe clogging or hinder oil recovery. Because of their multicomponent structure, the details of their interactions with surfaces are complex. We investigate the effect of the physicochemical properties of the substrate on the extent and mechanism of this adsorption. Using wetting measurements, we relate the initial kinetics of deposition to the interfacial energy of the surface. We then quantify the long-term adsorption dynamics using a quartz crystal microbalance and ellipsometry. Finally, we investigate the mechanism and morphology of adsorption with force spectroscopy measurements as a function of surface chemistry. We determine different adsorption regimes differing in orientation, packing density, and initial kinetics on different substrate functionalizations. Specifically, we find that alkane substrates delay the initial monolayer formation, fluorinated surfaces exhibit fast adsorption but low bonding strength, and hydroxyl substrates lead to a different adsorption orientation and a high packing density of the asphaltene layer. 2020-06-05T15:09:20Z 2020-06-05T15:09:20Z 2020-02 2020-05-18T15:22:48Z Article http://purl.org/eprint/type/JournalArticle 0743-7463 https://hdl.handle.net/1721.1/125690 Girard, Henri-Louis et al. “Asphaltene Adsorption on Functionalized Solids” Langmuir, vol. 36, no. 14, 2020, pp. 3894-3902 © 2020 The Author(s) en https://dx.doi.org/10.1021/acs.langmuir.0c00029 Langmuir Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf American Chemical Society (ACS) ACS |
| spellingShingle | Girard, Henri-Louis Bourrianne, Philippe Chen, Dayong Cohen, Robert E Asphaltene Adsorption on Functionalized Solids |
| title | Asphaltene Adsorption on Functionalized Solids |
| title_full | Asphaltene Adsorption on Functionalized Solids |
| title_fullStr | Asphaltene Adsorption on Functionalized Solids |
| title_full_unstemmed | Asphaltene Adsorption on Functionalized Solids |
| title_short | Asphaltene Adsorption on Functionalized Solids |
| title_sort | asphaltene adsorption on functionalized solids |
| url | https://hdl.handle.net/1721.1/125690 |
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