Solubility of Methane in Alkylpyridinium-Based Ionic Liquids at Temperatures between 298.15 and 343.15 K and Pressures up to 4 MPa

Ionic liquids (ILs) are promising solvents for gas absorption and separation processes. In this work, the solubility of methane in four alkylpyridinium-based ILs, namely, 1-butylpyridinium bis(trifluoromethylsulfonyl)imide (C4pyTf2N), 1-hexylpyridinium bis(trifluoromethylsulfonyl)imide (C6pyTf2N), 1...

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Main Authors: Kurnia, K.A., Matheswaran, P., How, C.J., Noh, M.H., Kusumawati, Y.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.30010 /
Published: American Chemical Society 2020
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091440459&doi=10.1021%2facs.jced.0c00493&partnerID=40&md5=8918dd37628a1599ea2ace6d7ac3c5b0
http://eprints.utp.edu.my/30010/
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spelling utp-eprints.300102022-03-25T03:17:57Z Solubility of Methane in Alkylpyridinium-Based Ionic Liquids at Temperatures between 298.15 and 343.15 K and Pressures up to 4 MPa Kurnia, K.A. Matheswaran, P. How, C.J. Noh, M.H. Kusumawati, Y. Ionic liquids (ILs) are promising solvents for gas absorption and separation processes. In this work, the solubility of methane in four alkylpyridinium-based ILs, namely, 1-butylpyridinium bis(trifluoromethylsulfonyl)imide (C4pyTf2N), 1-hexylpyridinium bis(trifluoromethylsulfonyl)imide (C6pyTf2N), 1-butylpyridinium tetrafluoroborate (C4pyBF4), and 1-hexylpyridinium tetrafluoroborate (C6pyBF4), was measured at temperatures 298.15 to 343.15 K and pressures up to 4 MPa using a pressure drop method. The result showed that the solubility of methane increases with increasing pressure and decreasing temperature. In addition, the solubility of methane in ILs can be ranked as follows: C4pyBF4 < C6pyBF4 < C4pyTf2N < C6pyTf2N. Furthermore, Henry's law constant (KH) and thermodynamic properties, namely, enthalpy and entropy at an infinite dilution, were estimated from the experimental solubility data. The estimated thermodynamic properties revealed that the solubility of methane in alkylpyridinium-based ILs is not only governed by a favorable solute-solvent interaction but also balanced by an unfavorable entropy of solution. Copyright © 2020 American Chemical Society. American Chemical Society 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091440459&doi=10.1021%2facs.jced.0c00493&partnerID=40&md5=8918dd37628a1599ea2ace6d7ac3c5b0 Kurnia, K.A. and Matheswaran, P. and How, C.J. and Noh, M.H. and Kusumawati, Y. (2020) Solubility of Methane in Alkylpyridinium-Based Ionic Liquids at Temperatures between 298.15 and 343.15 K and Pressures up to 4 MPa. Journal of Chemical and Engineering Data, 65 (9). pp. 4642-4648. http://eprints.utp.edu.my/30010/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Ionic liquids (ILs) are promising solvents for gas absorption and separation processes. In this work, the solubility of methane in four alkylpyridinium-based ILs, namely, 1-butylpyridinium bis(trifluoromethylsulfonyl)imide (C4pyTf2N), 1-hexylpyridinium bis(trifluoromethylsulfonyl)imide (C6pyTf2N), 1-butylpyridinium tetrafluoroborate (C4pyBF4), and 1-hexylpyridinium tetrafluoroborate (C6pyBF4), was measured at temperatures 298.15 to 343.15 K and pressures up to 4 MPa using a pressure drop method. The result showed that the solubility of methane increases with increasing pressure and decreasing temperature. In addition, the solubility of methane in ILs can be ranked as follows: C4pyBF4 < C6pyBF4 < C4pyTf2N < C6pyTf2N. Furthermore, Henry's law constant (KH) and thermodynamic properties, namely, enthalpy and entropy at an infinite dilution, were estimated from the experimental solubility data. The estimated thermodynamic properties revealed that the solubility of methane in alkylpyridinium-based ILs is not only governed by a favorable solute-solvent interaction but also balanced by an unfavorable entropy of solution. Copyright © 2020 American Chemical Society.
format Article
author Kurnia, K.A.
Matheswaran, P.
How, C.J.
Noh, M.H.
Kusumawati, Y.
spellingShingle Kurnia, K.A.
Matheswaran, P.
How, C.J.
Noh, M.H.
Kusumawati, Y.
Solubility of Methane in Alkylpyridinium-Based Ionic Liquids at Temperatures between 298.15 and 343.15 K and Pressures up to 4 MPa
author_sort Kurnia, K.A.
title Solubility of Methane in Alkylpyridinium-Based Ionic Liquids at Temperatures between 298.15 and 343.15 K and Pressures up to 4 MPa
title_short Solubility of Methane in Alkylpyridinium-Based Ionic Liquids at Temperatures between 298.15 and 343.15 K and Pressures up to 4 MPa
title_full Solubility of Methane in Alkylpyridinium-Based Ionic Liquids at Temperatures between 298.15 and 343.15 K and Pressures up to 4 MPa
title_fullStr Solubility of Methane in Alkylpyridinium-Based Ionic Liquids at Temperatures between 298.15 and 343.15 K and Pressures up to 4 MPa
title_full_unstemmed Solubility of Methane in Alkylpyridinium-Based Ionic Liquids at Temperatures between 298.15 and 343.15 K and Pressures up to 4 MPa
title_sort solubility of methane in alkylpyridinium-based ionic liquids at temperatures between 298.15 and 343.15 k and pressures up to 4 mpa
publisher American Chemical Society
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091440459&doi=10.1021%2facs.jced.0c00493&partnerID=40&md5=8918dd37628a1599ea2ace6d7ac3c5b0
http://eprints.utp.edu.my/30010/
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score 11.62408

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