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Vapor–Liquid and Chemical Equilibrium for Esterification of Acetic Acid + Isopropanol with [HSO3-bmim][HSO4] at 101.33 kPa

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Abstract

Vapor–liquid equilibrium data of binary systems (water + acetic acid, isopropanol + water, and acetic acid + isopropyl acetate), and ternary systems (water + acetic acid + 1-sulfobutyl-3-methylimidazolium hydrogen sulfate (ionic liquid, [HSO3-bmim][HSO4]), isopropanol + water + [HSO3-bmim][HSO4], and acetic acid + isopropyl acetate + [HSO3-bmim][HSO4]) were determined at 101.33 kPa. The nonrandom two-liquid (NRTL) model fitted well with the experimental data. The σ-profiles of water, acetic acid, isopropanol, isopropyl acetate, [HSO3-bmim]+, and [HSO4]− were calculated using the COSMO-RS model. Furthermore, the binding abilities of [HSO3-bmim][HSO4] ionic liquid with water, acetic acid, isopropanol, and isopropyl acetate were analyzed by σ-profiles. The chemical and phase equilibrium data of acetic acid + isopropanol, and acetic acid + isopropanol + [HSO3-bmim][HSO4] systems were determined, meanwhile, the chemical equilibrium constant Kr was calculated. These results provided basic thermodynamic data for [HSO3-bmim][HSO4] as the catalyst for the esterification system of acetic acid with isopropanol.

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Acknowledgements

This work was supported by the Natural Science Foundation of China (22168004), the Natural Science Foundation of Guangxi (2017GXNSFDA198047), and the Dean Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (2019Z010, 2021Z013).

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  1. Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China

    Yimin Guo, Yun Zou, Kelei Huang, Qing Li & Zhangfa Tong

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  2. Yun Zou
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  4. Qing Li
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GY data determination and manuscript writing; YZ and KH Reviewed and edited; QL investigation and analysis; ZT.

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Correspondence to Zhangfa Tong.

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Guo, Y., Zou, Y., Huang, K. et al. Vapor–Liquid and Chemical Equilibrium for Esterification of Acetic Acid + Isopropanol with [HSO3-bmim][HSO4] at 101.33 kPa. J Solution Chem 52, 1209–1231 (2023). https://doi.org/10.1007/s10953-023-01311-1

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