Measurement and Correlation of Liquid–Liquid Equilibrium for the Ternary System 1‑Octyl-3-methylimidazolium Tetrafluoroborate + 1‑Ethyl-3-methylimidazolium Tetrafluoroborate + Water

Measurement and Correlation of Liquid–Liquid Equilibrium for the Ternary System 1‑Octyl-3-methylimidazolium Tetrafluoroborate + 1‑Ethyl-3-methylimidazolium Tetrafluoroborate + Water

Mixed ionic liquids have excellent physicochemical properties; therefore, they are increasingly used in academic research. The separation of mixed ionic liquids is a key problem for the recycle of ionic liquids, and liquid–liquid extraction is an effective process to separate mixed ionic liquids. Th...

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Veröffentlicht in:Journal of chemical and engineering data 2024-03, Vol.69 (3), p.1178-1187
Hauptverfasser: Ba, Jiawei, Cui, Xianbao, Shen, Xiantong, Feng, Tianyang, Fu, Taotao, Feng, Huisheng
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Liquid-Liquid Equilibria and Vapor-Liquid-Liquid Equilibria
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container_end_page 1187
container_issue 3
container_start_page 1178
container_title Journal of chemical and engineering data
container_volume 69
creator Ba, Jiawei
Cui, Xianbao
Shen, Xiantong
Feng, Tianyang
Fu, Taotao
Feng, Huisheng
description Mixed ionic liquids have excellent physicochemical properties; therefore, they are increasingly used in academic research. The separation of mixed ionic liquids is a key problem for the recycle of ionic liquids, and liquid–liquid extraction is an effective process to separate mixed ionic liquids. The COSMO-SAC model was used to screen solvents to separate the ionic liquid mixture 1-octyl-3-methylimidazolium tetrafluoroborate ([C8mim]­[BF4]) + 1-ethyl-3-methylimidazolium tetrafluoroborate ([C2mim]­[BF4]) by liquid–liquid extraction, and water is selected as solvent. The liquid–liquid equilibrium (LLE) data for the ternary system of [C8mim]­[BF4] + [C2mim]­[BF4] + water were measured at temperatures of 298.15, 308.15, and 318.15 K under atmospheric pressure. The experimental LLE data were well correlated by the nonrandom two-liquid model. The experimental results show that water is an effective solvent for the separation of the ionic liquid mixture of [C8mim]­[BF4] and [C2mim]­[BF4].
doi_str_mv 10.1021/acs.jced.3c00758
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subjects Liquid-Liquid Equilibria and Vapor-Liquid-Liquid Equilibria
title Measurement and Correlation of Liquid–Liquid Equilibrium for the Ternary System 1‑Octyl-3-methylimidazolium Tetrafluoroborate + 1‑Ethyl-3-methylimidazolium Tetrafluoroborate + Water
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