Phase behavior and permeability of Alkyl-Methyl-Imidazolium Tricyanomethanide ionic liquids supported in nanoporous membranes

Tzialla, Ourania; Labropoulos, Anastasios; Panou, Athanasia I.; Sanopoulou, M.; Kouvelos, Evangelos P.; Athanasekou, Chrysoula; Beltsios, K.; Likodimos, V.; Falaras, Polycarpos; Romanos, George E.

doi:10.1016/j.seppur.2014.07.042

Cited by 22 publications

(49 citation statements)

References 74 publications

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“…Long-life SILMs membranes with high stability can be produced by using hydrophobic material, which increases the thickness of the boundary layers on the interfaces of SILMs mainly due to the physical bonding between ILs and substrates when ILs are coated in the pores of the substrates [ 25 ]. SILM supports are mainly differentiated based on their geometry (hollow fiber or flat sheet), pore size and homogeneity (symmetric/asymmetric) [ 26 , 27 , 28 , 29 ], and surface free energy (hydrophobicity/hydrophilicity) [ 30 ]. All these parameters have a direct effect on the successful IL deposition within the support pores.…”

Section: Supported Ionic Liquid Membranesmentioning

confidence: 99%

A Review on Ionic Liquid Gas Separation Membranes

et al. 2021

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Ionic liquids have attracted the attention of the industry and research community as versatile solvents with unique properties, such as ionic conductivity, low volatility, high solubility of gases and vapors, thermal stability, and the possibility to combine anions and cations to yield an almost endless list of different structures. These features open perspectives for numerous applications, such as the reaction medium for chemical synthesis, electrolytes for batteries, solvent for gas sorption processes, and also membranes for gas separation. In the search for better-performing membrane materials and membranes for gas and vapor separation, ionic liquids have been investigated extensively in the last decade and a half. This review gives a complete overview of the main developments in the field of ionic liquid membranes since their first introduction. It covers all different materials, membrane types, their preparation, pure and mixed gas transport properties, and examples of potential gas separation applications. Special systems will also be discussed, including facilitated transport membranes and mixed matrix membranes. The main strengths and weaknesses of the different membrane types will be discussed, subdividing them into supported ionic liquid membranes (SILMs), poly(ionic liquids) or polymerized ionic liquids (PILs), polymer/ionic liquid blends (physically or chemically cross-linked ‘ion-gels’), and PIL/IL blends. Since membrane processes are advancing as an energy-efficient alternative to traditional separation processes, having shown promising results for complex new separation challenges like carbon capture as well, they may be the key to developing a more sustainable future society. In this light, this review presents the state-of-the-art of ionic liquid membranes, to analyze their potential in the gas separation processes of the future.

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Section: Supported Ionic Liquid Membranesmentioning

confidence: 99%

A Review on Ionic Liquid Gas Separation Membranes

et al. 2021

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“…240 mm by a simple calculation using the density value for ILs (1.0738 g ml À1 for the 16 under the assumption that all ILs exist on the surface of the support. Due to the uncertainty in the thickness value of the selective ion gel layer, it is impossible to compare the permeance directly, but it is clear that all three membranes show CO 2 This agreement is probably due to the fact that the gas transport would mainly follow the liquid-phase mechanism because 95 wt% of the ion gel has a liquid phase, despite the presence of two phases in ion gels.…”

Section: 37mentioning

confidence: 99%

“…7 In general, a facilitated CO 2 transport membrane containing a room temperature ionic liquid (RTIL) as a carrier can be prepared in the form of supported ionic liquid membranes (SILMs) which are fabricated by lling the pores of a polymeric [8][9][10][11][12][13] or inorganic [14][15][16] porous support with an IL with a specic CO 2 affinity. Several reports are available in the literature in which SILMs were studied for the gas separation.…”

Section: Introductionmentioning

confidence: 99%

“…Several reports are available in the literature in which SILMs were studied for the gas separation. [8][9][10][11][12][13][14][15][16] For example, Scovazzo et al 17 showed SILMs that had long-term mixed gas separations for CO 2 /CH 4 and provided guidance for overcoming the upper limit on a Robeson plot. Labropoulos et al 16 studied the effect of the pore size of a ceramic support used in SILMs and demonstrated the phase dependence on the permselectivity of the gas.…”

Section: Introductionmentioning

confidence: 99%

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Alkylmethylimidazolium tricyanomethanide based supported ion gel membranes for CO₂ separation

et al. 2017

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“…The stability of the membranes was ensured for 25 h at an applied pressure of 4 bar in the separation of CO 2 and N 2 . Obviously, a narrow pore size distribution of the support will clearly have a positive effect on the stability of an SILM [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquid Confined in Mesoporous Polymer Membrane with Improved Stability for CO2/N2 Separation

Zhang

Jiang

2017

Nanomaterials

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Supported ionic liquid membranes (SILMs) have a promising prospect of application in flue gas separation, owing to its high permeability and selectivity of CO2. However, existing SILMs have the disadvantage of poor stability due to the loss of ionic liquid from the large pores of the macroporous support. In this study, a novel SILM with high stability was developed by confining ionic liquid in a mesoporous polymer membrane. First, a mesoporous polymer membrane derived from a soluble, low-molecular-weight phenolic resin precursor was deposited on a porous Al2O3 support, and then 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]) was immobilized inside mesopores of phenolic resin, forming the SILM under vacuum. Effects of trans-membrane pressure difference on the SILM separation performance were investigated by measuring the permeances of CO2 and N2. The SILM exhibits a high ideal CO2/N2 selectivity of 40, and an actual selectivity of approximately 25 in a mixed gas (50% CO2 and 50% N2) at a trans-membrane pressure difference of 2.5 bar. Compared to [emim][BF4] supported by polyethersulfone membrane with a pore size of around 0.45 μm, the [emim][BF4] confined in a mesoporous polymer membrane exhibits an improved stability, and its separation performance remained stable for 40 h under a trans-membrane pressure difference of 1.5 bar in a mixed gas before the measurement was intentionally stopped.

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Phase behavior and permeability of Alkyl-Methyl-Imidazolium Tricyanomethanide ionic liquids supported in nanoporous membranes

Cited by 22 publications

References 74 publications

A Review on Ionic Liquid Gas Separation Membranes

A Review on Ionic Liquid Gas Separation Membranes

Alkylmethylimidazolium tricyanomethanide based supported ion gel membranes for CO₂ separation

Ionic Liquid Confined in Mesoporous Polymer Membrane with Improved Stability for CO2/N2 Separation

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Phase behavior and permeability of Alkyl-Methyl-Imidazolium Tricyanomethanide ionic liquids supported in nanoporous membranes

Cited by 22 publications

References 74 publications

A Review on Ionic Liquid Gas Separation Membranes

A Review on Ionic Liquid Gas Separation Membranes

Alkylmethylimidazolium tricyanomethanide based supported ion gel membranes for CO2 separation

Ionic Liquid Confined in Mesoporous Polymer Membrane with Improved Stability for CO2/N2 Separation

Contact Info

Product

Resources

About

Alkylmethylimidazolium tricyanomethanide based supported ion gel membranes for CO₂ separation