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Synergistic and Antagonistic Effects of Aromatics on the Agglomeration of Gas Hydrates
Surfactants are often used to stabilize aqueous dispersions. For example, surfactants can be used to prevent hydrate particles from forming large plugs that can clog, and sometimes rupture pipelines. Changes in oil composition, however dramatically affect the performance of said surfactants. In this...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7098976/ https://www.ncbi.nlm.nih.gov/pubmed/32218443 http://dx.doi.org/10.1038/s41598-020-62060-5 |
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author | Bui, Tai Monteiro, Deepak Vo, Loan Striolo, Alberto |
author_facet | Bui, Tai Monteiro, Deepak Vo, Loan Striolo, Alberto |
author_sort | Bui, Tai |
collection | PubMed |
description | Surfactants are often used to stabilize aqueous dispersions. For example, surfactants can be used to prevent hydrate particles from forming large plugs that can clog, and sometimes rupture pipelines. Changes in oil composition, however dramatically affect the performance of said surfactants. In this work we demonstrate that aromatic compounds, dissolved in the hydrocarbon phase, can have both synergistic and antagonistic effects, depending on their molecular structure, with respect to surfactants developed to prevent hydrate agglomerations. While monocyclic aromatics such as benzene were found to disrupt the structure of surfactant films at low surfactant density, they are expelled from the interfacial film at high surfactant density. On the other hand, polycyclic aromatics, in particular pyrene, are found to induce order and stabilize the surfactant films both at low and high surfactant density. Based on our simulation results, polycyclic aromatics could behave as natural anti-agglomerants and enhance the performance of the specific surfactants considered here, while monocyclic aromatics could, in some cases, negatively affect performance. Although limited to the conditions chosen for the present simulations, the results, explained in terms of molecular features, could be valuable for better understanding synergistic and antagonistic effects relevant for stabilizing aqueous dispersions used in diverse applications, ranging from foodstuff to processing of nanomaterials and advanced manufacturing. |
format | Online Article Text |
id | pubmed-7098976 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-70989762020-03-30 Synergistic and Antagonistic Effects of Aromatics on the Agglomeration of Gas Hydrates Bui, Tai Monteiro, Deepak Vo, Loan Striolo, Alberto Sci Rep Article Surfactants are often used to stabilize aqueous dispersions. For example, surfactants can be used to prevent hydrate particles from forming large plugs that can clog, and sometimes rupture pipelines. Changes in oil composition, however dramatically affect the performance of said surfactants. In this work we demonstrate that aromatic compounds, dissolved in the hydrocarbon phase, can have both synergistic and antagonistic effects, depending on their molecular structure, with respect to surfactants developed to prevent hydrate agglomerations. While monocyclic aromatics such as benzene were found to disrupt the structure of surfactant films at low surfactant density, they are expelled from the interfacial film at high surfactant density. On the other hand, polycyclic aromatics, in particular pyrene, are found to induce order and stabilize the surfactant films both at low and high surfactant density. Based on our simulation results, polycyclic aromatics could behave as natural anti-agglomerants and enhance the performance of the specific surfactants considered here, while monocyclic aromatics could, in some cases, negatively affect performance. Although limited to the conditions chosen for the present simulations, the results, explained in terms of molecular features, could be valuable for better understanding synergistic and antagonistic effects relevant for stabilizing aqueous dispersions used in diverse applications, ranging from foodstuff to processing of nanomaterials and advanced manufacturing. Nature Publishing Group UK 2020-03-26 /pmc/articles/PMC7098976/ /pubmed/32218443 http://dx.doi.org/10.1038/s41598-020-62060-5 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Bui, Tai Monteiro, Deepak Vo, Loan Striolo, Alberto Synergistic and Antagonistic Effects of Aromatics on the Agglomeration of Gas Hydrates |
title | Synergistic and Antagonistic Effects of Aromatics on the Agglomeration of Gas Hydrates |
title_full | Synergistic and Antagonistic Effects of Aromatics on the Agglomeration of Gas Hydrates |
title_fullStr | Synergistic and Antagonistic Effects of Aromatics on the Agglomeration of Gas Hydrates |
title_full_unstemmed | Synergistic and Antagonistic Effects of Aromatics on the Agglomeration of Gas Hydrates |
title_short | Synergistic and Antagonistic Effects of Aromatics on the Agglomeration of Gas Hydrates |
title_sort | synergistic and antagonistic effects of aromatics on the agglomeration of gas hydrates |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7098976/ https://www.ncbi.nlm.nih.gov/pubmed/32218443 http://dx.doi.org/10.1038/s41598-020-62060-5 |
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