Ionic liquids for the inhibition of gas hydrates. A review

The formation of gas hydrates is a major issue during the operation of oil and gas pipelines, because gas hydrates cause plugging, thereby disrupting the normal oil and gas flows. A solution is to inject gas hydrate inhibitors such as ionic liquids. Contrary to classical inhibitors, ionic liquids ac...

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Main Authors: Ul Haq, I., Qasim, A., Lal, B., Zaini, D.B., Foo, K.S., Mubashir, M., Khoo, K.S., Vo, D.-V.N., Leroy, E., Show, P.L.
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Published: Springer Science and Business Media Deutschland GmbH 2022
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122666706&doi=10.1007%2fs10311-021-01359-9&partnerID=40&md5=c0867c7b9cf0654e5a8957773fd50f40
http://eprints.utp.edu.my/33663/
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spelling my.utp.eprints.336632022-09-07T08:32:40Z Ionic liquids for the inhibition of gas hydrates. A review Ul Haq, I. Qasim, A. Lal, B. Zaini, D.B. Foo, K.S. Mubashir, M. Khoo, K.S. Vo, D.-V.N. Leroy, E. Show, P.L. The formation of gas hydrates is a major issue during the operation of oil and gas pipelines, because gas hydrates cause plugging, thereby disrupting the normal oil and gas flows. A solution is to inject gas hydrate inhibitors such as ionic liquids. Contrary to classical inhibitors, ionic liquids act both as thermodynamic inhibitors and hydrate inhibitors, and as anti-agglomerates. Imidazolium-based ionic liquids have been found efficient for the inhibition of CO2 and CH4 hydrates. For CO2 gas hydrates, N-ethyl-N-methylmorpholinium bromide showed an average depression temperature of 1.72 K at 10 wt concentration. The induction time of 1-ethyl-3-methyl imidazolium bromide is 36.3 h for CO2 hydrates at 1 wt concentration. For CH4 hydrates, 1-ethyl-3-methyl-imidazolium chloride showed average depression temperature of 4.80 K at 40 wt. For mixed gas hydrates of CO2 and CH4, only quaternary ammonium salts have been studied. Tetramethyl ammonium hydroxide shifted the hydrate liquid vapour equilibrium to 1.56 K at 10 wt, while tetrabutylammonium hydroxide showed an induction time of 0.74 h at 1 wt concentration. © 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG. Springer Science and Business Media Deutschland GmbH 2022 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122666706&doi=10.1007%2fs10311-021-01359-9&partnerID=40&md5=c0867c7b9cf0654e5a8957773fd50f40 Ul Haq, I. and Qasim, A. and Lal, B. and Zaini, D.B. and Foo, K.S. and Mubashir, M. and Khoo, K.S. and Vo, D.-V.N. and Leroy, E. and Show, P.L. (2022) Ionic liquids for the inhibition of gas hydrates. A review. Environmental Chemistry Letters, 20 (3). pp. 2165-2188. http://eprints.utp.edu.my/33663/
institution Universiti Teknologi Petronas
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country Malaysia
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description The formation of gas hydrates is a major issue during the operation of oil and gas pipelines, because gas hydrates cause plugging, thereby disrupting the normal oil and gas flows. A solution is to inject gas hydrate inhibitors such as ionic liquids. Contrary to classical inhibitors, ionic liquids act both as thermodynamic inhibitors and hydrate inhibitors, and as anti-agglomerates. Imidazolium-based ionic liquids have been found efficient for the inhibition of CO2 and CH4 hydrates. For CO2 gas hydrates, N-ethyl-N-methylmorpholinium bromide showed an average depression temperature of 1.72 K at 10 wt concentration. The induction time of 1-ethyl-3-methyl imidazolium bromide is 36.3 h for CO2 hydrates at 1 wt concentration. For CH4 hydrates, 1-ethyl-3-methyl-imidazolium chloride showed average depression temperature of 4.80 K at 40 wt. For mixed gas hydrates of CO2 and CH4, only quaternary ammonium salts have been studied. Tetramethyl ammonium hydroxide shifted the hydrate liquid vapour equilibrium to 1.56 K at 10 wt, while tetrabutylammonium hydroxide showed an induction time of 0.74 h at 1 wt concentration. © 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
format Article
author Ul Haq, I.
Qasim, A.
Lal, B.
Zaini, D.B.
Foo, K.S.
Mubashir, M.
Khoo, K.S.
Vo, D.-V.N.
Leroy, E.
Show, P.L.
spellingShingle Ul Haq, I.
Qasim, A.
Lal, B.
Zaini, D.B.
Foo, K.S.
Mubashir, M.
Khoo, K.S.
Vo, D.-V.N.
Leroy, E.
Show, P.L.
Ionic liquids for the inhibition of gas hydrates. A review
author_facet Ul Haq, I.
Qasim, A.
Lal, B.
Zaini, D.B.
Foo, K.S.
Mubashir, M.
Khoo, K.S.
Vo, D.-V.N.
Leroy, E.
Show, P.L.
author_sort Ul Haq, I.
title Ionic liquids for the inhibition of gas hydrates. A review
title_short Ionic liquids for the inhibition of gas hydrates. A review
title_full Ionic liquids for the inhibition of gas hydrates. A review
title_fullStr Ionic liquids for the inhibition of gas hydrates. A review
title_full_unstemmed Ionic liquids for the inhibition of gas hydrates. A review
title_sort ionic liquids for the inhibition of gas hydrates. a review
publisher Springer Science and Business Media Deutschland GmbH
publishDate 2022
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122666706&doi=10.1007%2fs10311-021-01359-9&partnerID=40&md5=c0867c7b9cf0654e5a8957773fd50f40
http://eprints.utp.edu.my/33663/
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