Comparative study on ionic liquids and deep eutectic solvents in the separation of fuel additive isopropyl alcohol and ethyl acetate by the experimental study and molecular simulation

Sun, Chao; Qu, Yajuan; Dai, Yasen; Cui, Peizhe; Wang, Yinglong; Zhu, Zhaoyou; Gao, Jun

doi:10.1016/j.fuel.2023.129397

Cited by 6 publications

(1 citation statement)

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“…In particular, in ref , the possibility of using DES based on choline chloride for the extraction of ethanol from the ethanol–heptane system is presented. Much attention is focused on the extraction of 1-butanol from various systems using DES due to its promising potential for use in various industrial sectors, especially as a modern biofuel. − Authors of ref researched the separation of fuel additive isopropyl alcohol and ethyl acetate by various DESs and ILs. The separation of dimethyl carbonate and methanol azeotrope was studied by extractive distillation using deep eutectic solvents .…”

Section: Introductionmentioning

confidence: 99%

Effect of Deep Eutectic Solvents Based on Choline Chloride as Extractants on the Separation of the 1-Butanol–1-Butyl Formate System: Experimental Study and Comparative Analysis

Smirnov,

Toikka

2024

J. Chem. Eng. Data

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The current work is dedicated to the study of deep eutectic solvents (DES) as extractants for the purification of esters from alcohols. Separation efficiency of the mixture of 1-butanol−1-butyl formate using various deep eutectic solvents based on choline chloride with glycerol, ethylene glycol, urea, and glutaric acid was evaluated. The liquid−liquid equilibrium (LLE) data for the pseudoternary systems of 1-butanol−1butyl formate−deep eutectic solvents at 293.15 and 313.15 K and atmospheric pressure were obtained. The quantitative analysis was carried out using 1 H nuclear magnetic resonance (NMR) spectroscopy. The separation efficiency was evaluated based on the distribution coefficients and selectivity values. DES with urea and glycerol showed the highest separation selectivity, while DES with ethylene glycol and glutaric acid demonstrated the highest alcohol distribution coefficient. The reliability of the internal consistency of the liquid−liquid equilibrium data has been demonstrated by calculating the correlation equations of Othmer−Tobias, Hand, and Bachman. To confirm the experimental data, the LLE was calculated using the nonrandom two-liquid (NRTL) equation. It was shown that the standard deviation (σ) did not exceed 1.27%. A comparative analysis was carried out on the dependence of separation efficiency in other alcohol−ester systems using the same deep eutectic solvents.

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