A Low-Viscosity Copper-Based Deep Eutectic Solvent for Carbon Monoxide Elimination at the Return Corner of Coal Mining Faces
Tianyu Xin, Xihua Zhou, Yashengnan Sun, Gang Bai, Weiji Sun, Junguang Wang, Bing Liang, Jiaxu Jin
TL;DR
This study introduces a new low-viscosity copper-based deep eutectic solvent that effectively removes carbon monoxide at coal mining faces.
Contribution
A novel ethanol-modified deep eutectic solvent system [Emim]Cl-CuCl-1.0E is proposed for efficient CO elimination at ambient conditions.
Findings
The [Emim]Cl-CuCl-1.0E system showed optimal CO elimination performance at 298.15 K and atmospheric pressure.
Ethanol enhances the activity of Cu(I) ions, improving CO absorption efficiency.
The system's thermal stability and viscosity-temperature relationship were characterized for practical application.
Abstract
To address the recurring issue of excessive carbon monoxide (CO) concentrations at the return corner of fully mechanized mining faces under goaf conditions, this study investigated the elimination of CO at ambient temperature and pressure using deep eutectic solvents (DESs). CO, a colorless, odorless, and highly toxic gas, is notoriously difficult to remove under conventional conditions. A series of DESs were prepared and screened, revealing that the ethanol-modified system [Emim]Cl-CuCl-1.0E exhibited optimal CO elimination performance under conditions of 298.15 K and atmospheric pressure. Further investigations measured the viscosity-temperature relationship and thermal stability of this system while systematically examining the effects of temperature, CO contact time, and storage duration on its elimination efficiency. Analysis by FTIR and Raman spectroscopy indicated that Cu(I) ions…
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Taxonomy
TopicsCoal Properties and Utilization · Carbon Dioxide Capture Technologies · Ionic liquids properties and applications