Phase behavior and molecular insights on the separation of dimethyl carbonate and methanol azeotrope by extractive distillation using deep eutectic solvents

Qi, Jianguang; Qu, Yajuan; Zhou, Mengjin; Su, Zihao; Zhang, Xiaoying; Wei, Ranran; Xue, Ke; Zhu, Zhaoyou; Meng, Fanqing; Wang, Yinglong

doi:10.1016/j.seppur.2022.122489

Cited by 21 publications

(6 citation statements)

References 40 publications

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“…161 It is worth noting that the Gly extraction efficiency could be improved by the effective components of DESs and the appropriate ratio to biodiesel. 162,163 Recently, Gojun and colleagues evaluated the efficacy of ChCl : Gly DESs in the extraction of Gly during biodiesel purification. An integrated microsystem was used in their experiments.…”

Section: Dess As Extraction Solvents In Biodiesel Productionmentioning

confidence: 99%

Deep eutectic solvents for catalytic biodiesel production from liquid biomass and upgrading of solid biomass into 5-hydroxymethylfurfural

Li¹,

Chen²,

Zheng³

et al. 2023

Green Chem.

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Section: Dess As Extraction Solvents In Biodiesel Productionmentioning

confidence: 99%

Deep eutectic solvents for catalytic biodiesel production from liquid biomass and upgrading of solid biomass into 5-hydroxymethylfurfural

Li¹,

Chen²,

Zheng³

et al. 2023

Green Chem.

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“…The separation of dimethyl carbonate and methanol azeotrope was studied by extractive distillation using deep eutectic solvents. 28 Samarov et al 29,30 investigated the efficiency of separation of various alcohol−ester systems (ethanol−ethyl acetate, 1− propanol −1−propyl acetate, 1−butanol −1−butyl acetate) by some deep eutectic solvents based on chloride choline.…”

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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“…Liu X W et al explored the separation of DMC and ethanol, obtained the LLE data of DMC-ethanol-ChCl-EG/urea/malonic acid, and found that the selected DESs had good extraction effects. Recently, deep-eutectic solvents have received more and more attention, and their variety is also increasing. , As we all know, the DES has different extraction effects in different systems, so it is critical to choose an appropriate DES for different systems; many studies have shown that the COMSO-SAC model is an efficient method for the rapid screening of extractants. − Qi J G et al predicted the thermodynamic properties using the COMSO-SAC model and selected the efficient DESs. To further explore the extraction mechanism of DESs, the separation process was studied from the molecular perspective.…”

Section: Introductionmentioning

confidence: 99%

“…19,20 As we all know, the DES has different extraction effects in different systems, so it is critical to choose an appropriate DES for different systems; many studies have shown that the COMSO-SAC model is an efficient method for the rapid screening of extractants. 21−23 Qi J G et al 24 predicted the thermodynamic properties using the COMSO-SAC model and selected the efficient DESs. To further explore the extraction mechanism of DESs, the separation process was studied from the molecular perspective.…”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibrium Measurements and Interaction Explorations for Separation of Dimethyl Carbonate and Isopropyl Alcohol Using ChCl-Based Deep Eutectic Solvents

Sun

Xing

et al. 2023

Ind. Eng. Chem. Res.

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Deep eutectic solvents (DESs) were adopted to separate the azeotropes of dimethyl carbonate (DMC) and isopropyl alcohol (IPA). Liquid–liquid equilibrium (LLE) data plays a crucial role in designing the separation process. Three appropriate DESs (choline chloride (ChCl)-Urea, ChCl-Glycerol (Gly), ChCl-Ethylene glycol (EG)) were selected using the COMSO model. Then, the LLE data of DMC-IPA-(ChCl-Urea), DMC-IPA-(ChCl-EG), and DMC-IPA-(ChCl-Gly) were obtained through experiments at 298.15 K under 101.32 kPa, the binary interaction parameters were obtained by regressing the LLE data by the nonrandom two-liquid (NRTL) model, and the GUI-Matlab was adopted to verify the precision of the NRTL interaction parameters and the experimental data. Finally, the mechanism of formation of the combined structures (DES-IPA/DMC) was explored through ESP. To further explore the extraction capacities of the selected DESs, the extraction mechanism of three DESs was revealed. The interactions between DESs and IPA/DMC were explored through penetration distance and AIM analysis; the calculation results showed that (ChCl-EG) has the best extraction capacity, which is consistent with the experimental results. The results of experimental and theoretical calculations showed that the DES could effectively separate DMC and IPA.

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Phase behavior and molecular insights on the separation of dimethyl carbonate and methanol azeotrope by extractive distillation using deep eutectic solvents

Cited by 21 publications

References 40 publications

Deep eutectic solvents for catalytic biodiesel production from liquid biomass and upgrading of solid biomass into 5-hydroxymethylfurfural

Deep eutectic solvents for catalytic biodiesel production from liquid biomass and upgrading of solid biomass into 5-hydroxymethylfurfural

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

Liquid–Liquid Equilibrium Measurements and Interaction Explorations for Separation of Dimethyl Carbonate and Isopropyl Alcohol Using ChCl-Based Deep Eutectic Solvents

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