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Highly Efficient and Reversible Capture of Low Partial Pressure SO2 by Functional Deep Eutectic Solvents
- Source :
- Energy & Fuels. 32:10737-10744
- Publication Year :
- 2018
- Publisher :
- American Chemical Society (ACS), 2018.
-
Abstract
- Deep eutectic solvents (DESs) have been seen as promising absorbents for SO2 capture in recent years. In this work, a series of DESs based on imidazole derivatives were synthesized to investigate the low pressure SO2 absorption. The physical properties were determined, and the DESs exhibited low viscosities and high stability. Effects of composition, operating temperature and pressure, and water content on SO2 absorption capacity were investigated. It was demonstrated that the 1-butyl-3-methylimidazolium chloride (BmimCl):4-methylimidazole (4CH3-Im) (1:2) could absorb 1.42 and 0.189 gSO2/gDES at 101.3 and 1 kPa SO2 partial pressure, respectively, which were higher than most reports to date under this condition. The absorbed SO2 could be released easily under mild condition, and there was no change in absorption performance after 5 cycles. Furthermore, the absorption mechanism studied by FTIR and NMR indicated that the high SO2 absorption capacity originated from the synergistic interaction of BmimCl and 4...
- Subjects :
- Work (thermodynamics)
Materials science
General Chemical Engineering
Energy Engineering and Power Technology
02 engineering and technology
Partial pressure
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Chloride
0104 chemical sciences
chemistry.chemical_compound
Fuel Technology
chemistry
Operating temperature
Chemical engineering
medicine
Imidazole
Fourier transform infrared spectroscopy
Absorption (chemistry)
0210 nano-technology
Eutectic system
medicine.drug
Subjects
Details
- ISSN :
- 15205029 and 08870624
- Volume :
- 32
- Database :
- OpenAIRE
- Journal :
- Energy & Fuels
- Accession number :
- edsair.doi...........6037d9a6c969ac0f9c2c55ed3a013e5c