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Novel Synthesis of Choline-Based Amino Acid Ionic Liquids and Their Applications for Separating Asphalt from Carbonate Rocks

In this study, a series of choline-based amino acid ionic liquids have been synthesized in an economic method and are used to assist solvents with extracting asphalt from carbonate rocks. All of the ionic liquids perform well in extracting asphalt, especially choline histidine, by which the single-s...

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Detalles Bibliográficos
Autores principales: Zhang, Zisheng, Kang, Ning, Zhou, Jingjing, Li, Xingang, He, Lin, Sui, Hong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6523481/
https://www.ncbi.nlm.nih.gov/pubmed/30939779
http://dx.doi.org/10.3390/nano9040504
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author Zhang, Zisheng
Kang, Ning
Zhou, Jingjing
Li, Xingang
He, Lin
Sui, Hong
author_facet Zhang, Zisheng
Kang, Ning
Zhou, Jingjing
Li, Xingang
He, Lin
Sui, Hong
author_sort Zhang, Zisheng
collection PubMed
description In this study, a series of choline-based amino acid ionic liquids have been synthesized in an economic method and are used to assist solvents with extracting asphalt from carbonate rocks. All of the ionic liquids perform well in extracting asphalt, especially choline histidine, by which the single-step recovery of asphalt is up to 91%. Furthermore, oil product with higher quality (fewer solids entrained) is also obtained. Molecular dynamics simulation and thermodynamic equilibrium method are applied to investigate the role of amino acid ionic liquids via interaction energy calculation and surface free energy calculations. The simulation results suggest that the ionic liquid phase is beneficial for the transfer of oil fraction from the carbonate surface to the organic solvent phase. Moreover, the results of simulated calculation show that the introduction of a functional group with conjugated structures into ionic liquid, such as an imidazole ring and a benzene ring, is beneficial for enhancing oil recovery, which are in accordance with the results of experimental tests.
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spelling pubmed-65234812019-06-03 Novel Synthesis of Choline-Based Amino Acid Ionic Liquids and Their Applications for Separating Asphalt from Carbonate Rocks Zhang, Zisheng Kang, Ning Zhou, Jingjing Li, Xingang He, Lin Sui, Hong Nanomaterials (Basel) Article In this study, a series of choline-based amino acid ionic liquids have been synthesized in an economic method and are used to assist solvents with extracting asphalt from carbonate rocks. All of the ionic liquids perform well in extracting asphalt, especially choline histidine, by which the single-step recovery of asphalt is up to 91%. Furthermore, oil product with higher quality (fewer solids entrained) is also obtained. Molecular dynamics simulation and thermodynamic equilibrium method are applied to investigate the role of amino acid ionic liquids via interaction energy calculation and surface free energy calculations. The simulation results suggest that the ionic liquid phase is beneficial for the transfer of oil fraction from the carbonate surface to the organic solvent phase. Moreover, the results of simulated calculation show that the introduction of a functional group with conjugated structures into ionic liquid, such as an imidazole ring and a benzene ring, is beneficial for enhancing oil recovery, which are in accordance with the results of experimental tests. MDPI 2019-04-01 /pmc/articles/PMC6523481/ /pubmed/30939779 http://dx.doi.org/10.3390/nano9040504 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Zisheng
Kang, Ning
Zhou, Jingjing
Li, Xingang
He, Lin
Sui, Hong
Novel Synthesis of Choline-Based Amino Acid Ionic Liquids and Their Applications for Separating Asphalt from Carbonate Rocks
title Novel Synthesis of Choline-Based Amino Acid Ionic Liquids and Their Applications for Separating Asphalt from Carbonate Rocks
title_full Novel Synthesis of Choline-Based Amino Acid Ionic Liquids and Their Applications for Separating Asphalt from Carbonate Rocks
title_fullStr Novel Synthesis of Choline-Based Amino Acid Ionic Liquids and Their Applications for Separating Asphalt from Carbonate Rocks
title_full_unstemmed Novel Synthesis of Choline-Based Amino Acid Ionic Liquids and Their Applications for Separating Asphalt from Carbonate Rocks
title_short Novel Synthesis of Choline-Based Amino Acid Ionic Liquids and Their Applications for Separating Asphalt from Carbonate Rocks
title_sort novel synthesis of choline-based amino acid ionic liquids and their applications for separating asphalt from carbonate rocks
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6523481/
https://www.ncbi.nlm.nih.gov/pubmed/30939779
http://dx.doi.org/10.3390/nano9040504
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