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Efficient SO2 captu...
Efficient SO2 capture at ultra-low concentration using a hybrid absorbent of deep eutectic solvent and ethylene glycol
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- Yang, Fuliu (author)
- College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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- Fan, Jixue (author)
- College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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- Meng, Lingqiang (author)
- College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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- Wu, Jian (author)
- College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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- Li, Jun (author)
- College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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- Yang, Zhuhong (author)
- College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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- Chen, Yifeng (author)
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Laboratory for Biomass Chemical Utilization, Key and Open Laboratory of Forest Chemical Engineering, SFA, Key Laboratory of Biomass Energy and Material, Nanjing 210042, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
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- Ji, Xiaoyan (author)
- Luleå tekniska universitet,Energivetenskap
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(creator_code:org_t)
- Elsevier, 2023
- 2023
- English.
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In: Journal of Molecular Liquids. - : Elsevier. - 0167-7322 .- 1873-3166. ; 382
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Deep eutectic solvents (DESs) are considered as the highly effective absorbents for sulfur dioxide (SO2) capture. However, the high viscosity of DESs and the resulting slow absorption rate as well as low absorption capacity at low SO2 concentration seriously hinder their industrial application. In this study, DES of N-methyldiethanolamine (MDEA) and imidazole (Im) is simply blended with ethylene glycol (EG) forming a hybrid absorbent, namely MDEA/Im-EG, which exhibits extremely high SO2 capture capacity at low concentration. In particular, SO2 capture capacity in MDEA/Im-EG (molar ratio = 1:1) reaches 0.446 g SO2/g absorbent at 293.2 K with SO2 concentration of 2000 ppm. Moreover, the corresponding desorption enthalpy is only −40.67 kJ/mol. To well understand the results, thermodynamic analysis of SO2 capture is performed and the SO2 capture mechanism is speculated by nuclear magnetic resonance and Fourier transform infrared spectroscopy.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Keyword
- Capture mechanism
- Deep eutectic solvent
- Sulfur dioxide
- Thermodynamic model
- Energiteknik
- Energy Engineering
Publication and Content Type
- ref (subject category)
- art (subject category)
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