Emerging ionic liquid engineered polymeric membrane for carbon dioxide removal: A review

Shafie, Siti Nur Alwani; Nordin, Nik Abdul Hadi Md; Racha, Surya Murali; Bilad, Muhammad Roil; Othman, Mohd Hafiz Dzarfan; Misdan, Nurasyikin; Putra, Zulfan Adi; Wirzal, Mohd Dzul Hakim

doi:10.1016/j.molliq.2022.119192

Cited by 17 publications

(2 citation statements)

References 141 publications

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“…and anions (such as tetrafluoroborate, hexafluorophosphate, dicyanamide, bis(trifluoromethylsulfonyl)-imide, etc.). The physicochemical properties of ILs can be tailored for specific applications by varying the cation–anion selection, the chain length, or other functional groups of the cation/anion. − Ionic liquids are widely applied in chemical synthesis and catalysis, − biomass engineering, , biotechnology, − carbon dioxide capture, , and energy storage and conversion devices, ,− owing to their unique properties, such as high ionic conductivity, wide electrochemical stability window (ESW), low flammability, etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental and DFT Studies on Electrochemical Performances of Ester-Containing Vinylimidazolium Ionic Liquids: Effect of the Ester Substituent and Anion

Deng

Shen

et al. 2023

J. Chem. Eng. Data

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Four imidazolium ionic liquids (ILs) with vinyl and ester groups were synthesized and characterized by 1H NMR, 13C NMR, and element analysis. The refractive index, electrical conductivity (EC), and electrochemical stability window (ESW) of the ILs were determined. The effect of the alkyl chain length of the ester group and anions on electrochemical properties was analyzed by density functional theory (DFT) calculations. At the same temperatures, the EC of the ILs decreased with the increase of the alkyl chain length. The ester group and vinyl group of cations showed a negative effect on the EC. The ESW increased with the increase of the alkyl chain length. The introduction of the ester group and vinyl group decreased the cathodic limiting potential of ester-based vinylimidazolium cations. DFT simulations showed that the structure of the IL was closely related to the EC and ESW. The average hydrogen bond length increased with the increase of the alkyl chain length of the ester group. The absolute interaction energy of ILs decreased with the increase of the alkyl chain length. Introduction of the vinyl group and ester group into the imidazolium cation resulted in a stronger cation–anion interaction, strengthening the ion mobility and charge transfer, resulting in a lower EC. The information is useful for the design and optimization of ILs as electrolytes for energy storage applications.

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Section: Introductionmentioning

confidence: 99%

Experimental and DFT Studies on Electrochemical Performances of Ester-Containing Vinylimidazolium Ionic Liquids: Effect of the Ester Substituent and Anion

Deng

Shen

et al. 2023

J. Chem. Eng. Data

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“…Ionic liquids (ILs), as a kind of advanced materials, have been widely used in gas separation of CO 2 , SO 2 , and NH 3 due to their structural designability, negligible vapor pressure, and high gas affinity. ,− Combing ILs with PIs-based membrane separation is expected to take full advantage of ILs to develop novel membranes with high affinity toward permeated gas molecules and precise sieving channels for fast gas transport. , For example, Kanehashi et al prepared a fluorinated glassy PI (6FDA-TeMPD) composite membrane containing up to 81 wt % [Bmim][NTf 2 ] for the first time, which exhibited excellent CO 2 /light gas separation, in that the formation of high affinity IL domains greatly increases gas separation performance. Afterward, [Bmim][NTf 2 ]/commercial PI (PMDA-ODA) membranes with excellent thermal stability over a wide range of processing conditions have also been prepared, in which dispersed ILs significantly improved CO 2 permeability without reducing gas separation selectivity .…”

Section: Introductionmentioning

confidence: 99%

Polyimide/Ionic Liquids Hybrid Membranes with NH₃-Philic Channels for Ammonia-Based CO₂ Separation Processes

Jiang,

Li,

Bai

et al. 2023

ACS Appl. Mater. Interfaces

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An efficient separation technology involving ammonia (NH3) and carbon dioxide (CO2) is of great importance for achieving low-carbon economy, environmental protection, and resource utilization. However, directly separating NH3 and CO2 for ammonia-based CO2 capture processes is still a great challenge. Herein, we propose a new strategy for selective separation of NH3 and CO2 by functional hybrid membranes that integrate polyimide (PI) and ionic liquids (ILs). The incorporated protic IL [Bim][NTf2] is confined in the interchain segment of PI, which decreases the fractional free volume and narrows the gas transport channel, benefiting the high separation selectivity of hybrid membranes. At the same time, the confined IL also provides high NH3 affinity for transport channels, promoting NH3 selective and fast transport owing to strong hydrogen bonding interaction between [Bim][NTf2] and NH3 molecules. Thus, the optimal hybrid membrane exhibits an ultrahigh NH3/CO2 ideal selectivity of up to 159 at 30 °C without sacrificing permeability, which is 60 times higher than that of the neat PI membrane and superior to the state-of-the art reported values. Moreover, the introduction of [Bim][NTf2] also reduces the permeation active energy of NH3 and reverses the hybrid membrane toward “NH3 affinity”, as understood by studying the effect of temperature. Also, NH3 molecules are much easier to transport at high temperature, showing great application potential in direct NH3/CO2 separation. Overall, this work provides a promising ultraselective membrane material for ammonia-based CO2 capture processes.

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Quantitative structure‐property relationshiptechniques for predicting carbon dioxide solubility in ionic liquids using machine learning methods

Benmouloud,

Euldji,

Si‐Moussa

et al. 2024

Int J of Quantum Chemistry

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Ionic liquids (ILs) are considered unique and attractive types of solvents with great potential to capture carbon dioxide (CO2) and reduce its emissions into the atmosphere. On the other hand, carrying out experimental measurements of CO2 solubility for each new IL is time‐consuming and expensive. Whereas, the possible combinations of cations and anions are numerous. Therefore, the preparation and design of such processes requires simple and accurate models to predict the solubility of CO2 as a greenhouse gas. In the present study, two different models, namely: artificial neural network (ANN) and support vector machine optimized with dragonfly algorithm (DA‐SVM) were used in order to establish a quantitative structure–property relationship (QSPR) between the molecular structures of cations and anions and the CO2 solubility. More than 10 116 CO2 solubility data measured in various ionic liquids (ILs) at different temperatures and pressures were collected. 13 significant PaDEL descriptors (E2M, MATS8S, TDB6I, TDB1S, ATSC4V, MATS8M, ATSC7V, Gats2S, Gats5S, Gats5C, ATSC6V, DE, and Lobmax), temperature and pressure were considered as the model input data. For the test set data (2023 data point), the estimated mean absolute error (MAE) and R2 for the ANN model are of 0.0195 and 0.9828 and 0.0219 and 0.9745 for the DA‐SVM model. The results obtained showed that both models can reliably predict the solubility of CO2 in ILs with a slight superiority of the ANN model. Examination of sensitivity and outlier diagnosis examinations confirmed that the QSPR model optimized using the ANN algorithm is better suited to correlate and predict this property.

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Emerging ionic liquid engineered polymeric membrane for carbon dioxide removal: A review

Cited by 17 publications

References 141 publications

Experimental and DFT Studies on Electrochemical Performances of Ester-Containing Vinylimidazolium Ionic Liquids: Effect of the Ester Substituent and Anion

Experimental and DFT Studies on Electrochemical Performances of Ester-Containing Vinylimidazolium Ionic Liquids: Effect of the Ester Substituent and Anion

Polyimide/Ionic Liquids Hybrid Membranes with NH₃-Philic Channels for Ammonia-Based CO₂ Separation Processes

Quantitative structure‐property relationshiptechniques for predicting carbon dioxide solubility in ionic liquids using machine learning methods

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Emerging ionic liquid engineered polymeric membrane for carbon dioxide removal: A review

Cited by 17 publications

References 141 publications

Experimental and DFT Studies on Electrochemical Performances of Ester-Containing Vinylimidazolium Ionic Liquids: Effect of the Ester Substituent and Anion

Experimental and DFT Studies on Electrochemical Performances of Ester-Containing Vinylimidazolium Ionic Liquids: Effect of the Ester Substituent and Anion

Polyimide/Ionic Liquids Hybrid Membranes with NH3-Philic Channels for Ammonia-Based CO2 Separation Processes

Quantitative structure‐property relationshiptechniques for predicting carbon dioxide solubility in ionic liquids using machine learning methods

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Product

Resources

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Polyimide/Ionic Liquids Hybrid Membranes with NH₃-Philic Channels for Ammonia-Based CO₂ Separation Processes