Cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition
In light of current concerns about environmental impact, ionic liquids have been tested in a number of industrial applications, including gas purification, lubrication, and catalysis. In this work, cost-effective alkylammonium-based protic ionic liquids (PIL) were utilized as high-dosage gas hydrate...
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ftqataruniv:oai:qspace.qu.edu.qa:10576/13109 2023-06-11T04:14:01+02:00 Cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition Altamash T. Khraisheh M. Qureshi M.F. Saad M.A. Aparicio S. Atilhan M. http://hdl.handle.net/10576/13109 https://doi.org/10.1016/j.jngse.2018.08.002 en eng Elsevier B.V. 18755100 http://dx.doi.org/10.1016/j.jngse.2018.08.002 http://hdl.handle.net/10576/13109 59 - 68 58 Flow assurance Gas hydrates Inhibitors Protic ionic liquids Article ftqataruniv https://doi.org/10.1016/j.jngse.2018.08.002 2023-04-18T00:30:05Z In light of current concerns about environmental impact, ionic liquids have been tested in a number of industrial applications, including gas purification, lubrication, and catalysis. In this work, cost-effective alkylammonium-based protic ionic liquids (PIL) were utilized as high-dosage gas hydrate inhibitors in order to achieve an inexpensive feedstock. Three structurally different PILs, ethylammonium formate ([EA][Of]), dimethylammonium formate ([DMA][Of]), and dimethylethylammonium formate ([DMEA][Of]), were studied to determine their inhibitory effect on methane gas hydrates. All of the studied PILs were initially tested for thermodynamic gas hydrate inhibition at 5 wt% and at 10 wt% to understand the effect of concentration by increasing the dosage. These PILs were produced by adding primary, secondary, and tertiary amines to formic acid, which is mildly acidic in nature and has biological significance. The PILs showed similar thermodynamic hydrate inhibition (THI) effects at the studied concentrations. The THI trend ([EA][Of] ? [DMA][Of] ? [DMEA][Of]) reflects the small effect of the structural variation of the cation, with the common formate anion providing the dominant inhibitory action due to presence of a carboxylic group. The pressure-temperature (P-T) equilibrium curve data of the investigated PILs were compared with the existing literature data for ILs including [TBMA][Of] at 10 wt% and 5 wt%. The comparison plots reveal that the THI effects of the studied PILs are better than or comparable to the other ILs, which is the matter of discussion over cost effective operation. Additionally, experimental kinetic hydrate inhibition (KHI) data were collected for 5 wt% PIL systems using polyethylene oxide (1 wt%) as an additive to demonstrate its synergistic effect. This work was made possible by the NPRP grant # 6-330-2-140 . M. Fahed Qureshi also acknowledges the grant GSRA # 2-1-0603-14012 . Both grants are provided by the Qatar National Research Fund (a member of Qatar Foundation). Scopus Article in Journal/Newspaper Methane hydrate Qatar University: QU Institutional Repository Journal of Natural Gas Science and Engineering 58 59 68 |
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Qatar University: QU Institutional Repository |
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ftqataruniv |
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English |
topic |
Flow assurance Gas hydrates Inhibitors Protic ionic liquids |
spellingShingle |
Flow assurance Gas hydrates Inhibitors Protic ionic liquids Altamash T. Khraisheh M. Qureshi M.F. Saad M.A. Aparicio S. Atilhan M. Cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition |
topic_facet |
Flow assurance Gas hydrates Inhibitors Protic ionic liquids |
description |
In light of current concerns about environmental impact, ionic liquids have been tested in a number of industrial applications, including gas purification, lubrication, and catalysis. In this work, cost-effective alkylammonium-based protic ionic liquids (PIL) were utilized as high-dosage gas hydrate inhibitors in order to achieve an inexpensive feedstock. Three structurally different PILs, ethylammonium formate ([EA][Of]), dimethylammonium formate ([DMA][Of]), and dimethylethylammonium formate ([DMEA][Of]), were studied to determine their inhibitory effect on methane gas hydrates. All of the studied PILs were initially tested for thermodynamic gas hydrate inhibition at 5 wt% and at 10 wt% to understand the effect of concentration by increasing the dosage. These PILs were produced by adding primary, secondary, and tertiary amines to formic acid, which is mildly acidic in nature and has biological significance. The PILs showed similar thermodynamic hydrate inhibition (THI) effects at the studied concentrations. The THI trend ([EA][Of] ? [DMA][Of] ? [DMEA][Of]) reflects the small effect of the structural variation of the cation, with the common formate anion providing the dominant inhibitory action due to presence of a carboxylic group. The pressure-temperature (P-T) equilibrium curve data of the investigated PILs were compared with the existing literature data for ILs including [TBMA][Of] at 10 wt% and 5 wt%. The comparison plots reveal that the THI effects of the studied PILs are better than or comparable to the other ILs, which is the matter of discussion over cost effective operation. Additionally, experimental kinetic hydrate inhibition (KHI) data were collected for 5 wt% PIL systems using polyethylene oxide (1 wt%) as an additive to demonstrate its synergistic effect. This work was made possible by the NPRP grant # 6-330-2-140 . M. Fahed Qureshi also acknowledges the grant GSRA # 2-1-0603-14012 . Both grants are provided by the Qatar National Research Fund (a member of Qatar Foundation). Scopus |
format |
Article in Journal/Newspaper |
author |
Altamash T. Khraisheh M. Qureshi M.F. Saad M.A. Aparicio S. Atilhan M. |
author_facet |
Altamash T. Khraisheh M. Qureshi M.F. Saad M.A. Aparicio S. Atilhan M. |
author_sort |
Altamash T. |
title |
Cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition |
title_short |
Cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition |
title_full |
Cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition |
title_fullStr |
Cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition |
title_full_unstemmed |
Cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition |
title_sort |
cost-effective alkylammonium formate-based protic ionic liquids for methane hydrate inhibition |
publisher |
Elsevier B.V. |
url |
http://hdl.handle.net/10576/13109 https://doi.org/10.1016/j.jngse.2018.08.002 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
18755100 http://dx.doi.org/10.1016/j.jngse.2018.08.002 http://hdl.handle.net/10576/13109 59 - 68 58 |
op_doi |
https://doi.org/10.1016/j.jngse.2018.08.002 |
container_title |
Journal of Natural Gas Science and Engineering |
container_volume |
58 |
container_start_page |
59 |
op_container_end_page |
68 |
_version_ |
1768391524908793856 |