| 1. |
- Chen, Yifeng, et al.
(author)
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Novel Index to Screen and Evaluate Ionic Liquids for CO2/CH4 Separation
- 2024
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In: Industrial & Engineering Chemistry Research. - : American Chemical Society (ACS). - 0888-5885 .- 1520-5045.
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Journal article (peer-reviewed)abstract
- Efficient CO2/CH4 separation for biogas upgrading can be achieved by using ionic liquids (ILs) as absorbents. In this study, a novel index named “relative absorption ability” (RAA) was proposed for the first time to facilitate the screening and evaluation of potential absorbents based on their thermodynamic and kinetic properties for CO2/CH4 separation. Subsequently, the properties of 2009 ILs were predicted with the conductor-like screening model, and the top 10 ILs were screened. Finally, the cost of the screened top two ILs for CO2/CH4 separation was further estimated with process simulation. The results further prove the reliability of the new proposed RAA index in screening and evaluating, and the screened promising ILs can reduce the costs of CO2/CH4 separation by 53.9% and 51.9%, respectively, in comparison to the current commercial technology.
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| 2. |
- Foorginezhad, Sahar, et al.
(author)
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Reviewing and screening ionic liquids and deep eutectic solvents for effective CO2 capture
- 2022
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In: Frontiers in Chemistry. - : Frontiers Media S.A.. - 2296-2646. ; 10
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Research review (peer-reviewed)abstract
- CO2 capture is essential for both mitigating CO2 emissions and purifying/conditioning gases for fuel and chemical production. To further improve the process performance with low environmental impacts, different strategies have been proposed, where developing liquid green absorbent for capturing CO2 is one of the effective options. Ionic liquids (IL)/deep eutectic solvents (DES) have recently emerged as green absorbents with unique properties, especially DESs also benefit from facile synthesis, low toxicity, and high biodegradability. To promote their development, this work summarized the recent research progress on ILs/DESs developed for CO2 capture from the aspects of those physical- and chemical-based, and COSMO-RS was combined to predict the properties that are unavailable from published articles in order to evaluate their performance based on the key properties for different IL/DES-based technologies. Finally, top 10 ILs/DESs were listed based on the corresponding criteria. The shared information will provide insight into screening and further developing IL/DES-based technologies for CO2 capture.
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