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Preparation of Binary and Ternary Deep Eutectic Systems

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Effective Absorption of 1,2-Dichloroethane Using Low-Viscosity Deep Eutectic Solvents.

Shumeng Yin^1,2, Shuying Wang³, Gangqiang Yu³

¹SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao 266100, China.

|April 14, 2025

Summary

This summary is machine-generated.

Novel low-viscosity deep eutectic solvents (DESs) efficiently absorb 1,2-dichloroethane (DCE), overcoming limitations of high viscosity in green solvent applications for volatile organic compound (VOC) removal.

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Area of Science:

Green Chemistry
Separation Science
Chemical Engineering

Background:

Deep eutectic solvents (DESs) are promising green solvents for absorption processes.
High viscosity of traditional DESs hinders mass transfer and increases energy consumption.
Efficient absorption of volatile organic compounds (VOCs) like 1,2-dichloroethane (DCE) is crucial.

Purpose of the Study:

To design and investigate low-viscosity DESs for enhanced DCE absorption.
To understand the absorption mechanism and interaction dynamics.
To simulate the industrial feasibility of DES-based DCE removal.

Main Methods:

Synthesis and characterization of novel DESs.
Absorption capacity and viscosity measurements.
Spectroscopic (1H NMR, FT-IR) and quantum chemical (QC) analyses.
Process simulation for industrial application.

Main Results:

A DES composed of 3,4-DMOET:ButA (1:2 molar ratio) showed high DCE absorption capacity (2746 mg/g) and low viscosity (26.51 mPa·s).
Absorption mechanism identified as a physical process driven by hydrogen bonding and van der Waals interactions.
Process simulation confirmed high DCE removal efficiency.

Conclusions:

Low-viscosity DESs offer an effective strategy for intensifying VOC absorption processes.
The developed DES is suitable for industrial DCE removal.
This approach can be extended to absorb other VOCs, promoting sustainable separation technologies.