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Homologue-paired liquids as special non-ionic deep eutectic solvents for efficient absorption of SO2
Hangzhi Wu1,2, Wenjie Xiong2, Shuyue Wen2
1School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China. shulezhang@163.com.
Abstract:
Low-viscous homologue-paired liquids (HPLs) are designed and employed as special non-ionic deep eutectic solvents for selective separation of SO2 from CO2 and N2. The HPLs are found to have excellent inherent properties (e.g., low cost, volatility and viscosity), high absorption capacity, fast absorption rate, and moderate Lewis acid-base interaction with SO2. Regeneration experiments are done to show their excellent recyclability, and industrial desulfurization is exemplified in a small column with suitable parameters to show their potential as SO2 absorbents.
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