Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants
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2016
Authors
Dimitrijević, AleksandraZec, Nebojša
Zdolšek, Nikola
Dožić, Sanja
Tot, Aleksandar
Gadžurić, Slobodan
Vraneš, Milan
Trtić-Petrović, Tatjana M.
Article (Published version)
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In this work three 1-alkyl-3-ethylimidazolium bromide ionic liquids (alkyl = ethyl, hexyl and octyl) were synthesized applying both, conventional and microwave assisted synthetic paths. The phase diagrams for aqueous solutions of 1-alkyl-3-ethylimidazolium bromide ionic liquids as novel extractants combined with phosphate-based salts are reported and discussed in terms of aqueous biphasic system (ABS) formation. Merchuk equation was applied in order to correlate the,experimental binodal data. The liquid-liquid equilibrium data (tie-line compositions and tie-line length) were also experimentally determined by a gravimetric method. The influence of the alkyl chain length on ABS formation ability was investigated. It was found that ability to form ABS increases with the increase of the alkyl chain length on the imidazolium cation. Also, it was found that ionic liquids with ethyl group in the N-3 position better form ABS compared to those with methyl substituent. This was discussed in term...s of increasing ionic liquid hydrophobicity and poor affinity for water. In order to better understand the impact of the alkyl side chain of the imidazolium ion and the efficiency of ABS formation, computer simulations were performed using investigated ionic liquids with the ethyl group in the position N-3 of the cation and different alkyl substituents in the position N-1. Also, extraction of selected organic dyes was performed to demonstrate application of studied ionic liquids as novel extractants. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
Keywords:
1-Alkyl-3-ethylimidazolium bromide / Aqueous biphasic system / DFT calculations / Extraction of dyes / Ionic liquids / Liquid liquid equilibriumSource:
Journal of Industrial and Engineering Chemistry, 2016, 40, 152-160Funding / projects:
- Physics and Chemistry with Ion Beams (RS-45006)
- Sustainable and green chemistry approach for environmental friendly analytical methods and energy storage (RS-172012)
DOI: 10.1016/j.jiec.2016.06.017
ISSN: 1226-086X; 1876-794X
WoS: 000381834800019
Scopus: 2-s2.0-84990934062
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VinčaTY - JOUR AU - Dimitrijević, Aleksandra AU - Zec, Nebojša AU - Zdolšek, Nikola AU - Dožić, Sanja AU - Tot, Aleksandar AU - Gadžurić, Slobodan AU - Vraneš, Milan AU - Trtić-Petrović, Tatjana M. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1213 AB - In this work three 1-alkyl-3-ethylimidazolium bromide ionic liquids (alkyl = ethyl, hexyl and octyl) were synthesized applying both, conventional and microwave assisted synthetic paths. The phase diagrams for aqueous solutions of 1-alkyl-3-ethylimidazolium bromide ionic liquids as novel extractants combined with phosphate-based salts are reported and discussed in terms of aqueous biphasic system (ABS) formation. Merchuk equation was applied in order to correlate the,experimental binodal data. The liquid-liquid equilibrium data (tie-line compositions and tie-line length) were also experimentally determined by a gravimetric method. The influence of the alkyl chain length on ABS formation ability was investigated. It was found that ability to form ABS increases with the increase of the alkyl chain length on the imidazolium cation. Also, it was found that ionic liquids with ethyl group in the N-3 position better form ABS compared to those with methyl substituent. This was discussed in terms of increasing ionic liquid hydrophobicity and poor affinity for water. In order to better understand the impact of the alkyl side chain of the imidazolium ion and the efficiency of ABS formation, computer simulations were performed using investigated ionic liquids with the ethyl group in the position N-3 of the cation and different alkyl substituents in the position N-1. Also, extraction of selected organic dyes was performed to demonstrate application of studied ionic liquids as novel extractants. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. T2 - Journal of Industrial and Engineering Chemistry T1 - Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants VL - 40 SP - 152 EP - 160 DO - 10.1016/j.jiec.2016.06.017 ER -
@article{ author = "Dimitrijević, Aleksandra and Zec, Nebojša and Zdolšek, Nikola and Dožić, Sanja and Tot, Aleksandar and Gadžurić, Slobodan and Vraneš, Milan and Trtić-Petrović, Tatjana M.", year = "2016", abstract = "In this work three 1-alkyl-3-ethylimidazolium bromide ionic liquids (alkyl = ethyl, hexyl and octyl) were synthesized applying both, conventional and microwave assisted synthetic paths. The phase diagrams for aqueous solutions of 1-alkyl-3-ethylimidazolium bromide ionic liquids as novel extractants combined with phosphate-based salts are reported and discussed in terms of aqueous biphasic system (ABS) formation. Merchuk equation was applied in order to correlate the,experimental binodal data. The liquid-liquid equilibrium data (tie-line compositions and tie-line length) were also experimentally determined by a gravimetric method. The influence of the alkyl chain length on ABS formation ability was investigated. It was found that ability to form ABS increases with the increase of the alkyl chain length on the imidazolium cation. Also, it was found that ionic liquids with ethyl group in the N-3 position better form ABS compared to those with methyl substituent. This was discussed in terms of increasing ionic liquid hydrophobicity and poor affinity for water. In order to better understand the impact of the alkyl side chain of the imidazolium ion and the efficiency of ABS formation, computer simulations were performed using investigated ionic liquids with the ethyl group in the position N-3 of the cation and different alkyl substituents in the position N-1. Also, extraction of selected organic dyes was performed to demonstrate application of studied ionic liquids as novel extractants. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.", journal = "Journal of Industrial and Engineering Chemistry", title = "Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants", volume = "40", pages = "152-160", doi = "10.1016/j.jiec.2016.06.017" }
Dimitrijević, A., Zec, N., Zdolšek, N., Dožić, S., Tot, A., Gadžurić, S., Vraneš, M.,& Trtić-Petrović, T. M.. (2016). Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants. in Journal of Industrial and Engineering Chemistry, 40, 152-160. https://doi.org/10.1016/j.jiec.2016.06.017
Dimitrijević A, Zec N, Zdolšek N, Dožić S, Tot A, Gadžurić S, Vraneš M, Trtić-Petrović TM. Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants. in Journal of Industrial and Engineering Chemistry. 2016;40:152-160. doi:10.1016/j.jiec.2016.06.017 .
Dimitrijević, Aleksandra, Zec, Nebojša, Zdolšek, Nikola, Dožić, Sanja, Tot, Aleksandar, Gadžurić, Slobodan, Vraneš, Milan, Trtić-Petrović, Tatjana M., "Aqueous biphasic system formation using 1-alkyl-3-ethylimidazolium bromide ionic liquids as new extractants" in Journal of Industrial and Engineering Chemistry, 40 (2016):152-160, https://doi.org/10.1016/j.jiec.2016.06.017 . .