Permeation and sorption properties of CO2-selective blend membranes based on polyvinyl alcohol (PVA) and 1-ethyl-3-methylimidazolium dicyanamide ([EMIM][DCA]) ionic liquid for effective CO2/H2 separation

Klepić, Martina; Setničková, Kateřina; Lanč, Marek; Žák, Michal; Izák, Pavel; Dendisová, Marcela; Fuoco, Alessio; Jansen, Johannes C.; Friess, Karel

doi:10.1016/j.memsci.2019.117623

Cited by 52 publications

(17 citation statements)

References 60 publications

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“…SILMs can be prepared using chemical or physical methods [ 47 ] including immobilization of an ionic liquid by impregnation [ 48 ], sol-gel method [ 49 ], encapsulation [ 50 ], and immobilization via covalent bonding [ 51 ]. For the two major preparation techniques, coating [ 33 , 40 ] and soaking, the prevailing processes rely on pressure or vacuum-assisted infiltration [ 32 , 34 , 39 , 41 ].…”

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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“…Gravimetric sorption experiments were performed on an in-house designed apparatus equipped with a McBain balance for N 2 , CH 4 , and CO 2 , using a method described elsewhere [39][40][41][42]. The sample (approximately 0.15 g) placed in a thick-walled glass tube was evacuated (<10 −3 mbar) prior to each measurement by a rotary oil pump (Leybold Trivac D4B) until a constant weight was achieved.…”

Section: Gravimetric Sorptionmentioning

confidence: 99%

Poly[3-ethyl-1-vinyl-imidazolium] diethyl phosphate/Pebax® 1657 Composite Membranes and Their Gas Separation Performance

Mazzei

Nikolaeva²,

Fuoco

et al. 2020

Membranes

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Poly(ionic liquid)s are an innovative class of materials with promising properties in gas separation processes that can be used to boost the neat polymer performances. Nevertheless, some of their properties such as stability and mechanical strength have to be improved to render them suitable as materials for industrial applications. This work explored, on the one hand, the possibility to improve gas transport and separation properties of the block copolymer Pebax® 1657 by blending it with poly[3-ethyl-1-vinyl-imidazolium] diethyl phosphate (PEVI-DEP). On the other hand, Pebax® 1657 served as a support for the PIL and provided mechanical resistance to the samples. Pebax® 1657/PEVI-DEP composite membranes containing 20, 40, and 60 wt.% of PEVI-DEP were cast from solutions of the right proportion of the two polymers in a water/ethanol mixture. The PEVI-DEP content affected both the morphology of the dense membranes and gas transport through the membranes. These changes were revealed by scanning electron microscopy (SEM), time-lag, and gravimetric sorption measurements. Pebax® 1657 and PEVI-DEP showed similar affinity towards CO2, and its uptake or solubility was not influenced by the amount of PIL in the membrane. Therefore, the addition of the PIL did not lead to improvements in the separation of CO2 from other gases. Importantly, PEVI-DEP (40 wt.%) incorporation affected and improved permeability and selectivity by more than 50% especially for the separation of light gases, e.g., H2/CH4 and H2/CO2, but higher PEVI-DEP concentrations lead to a decline in the transport properties.

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“…Membrane-based technology has been playing a significant role in pervaporation [ 1 , 2 , 3 , 4 ] and gas separation process [ 5 , 6 , 7 , 8 , 9 ] due to its numerous advantages. Polymeric membranes have been intensively studied and applied in many processes due to their good processability, low cost and reasonable long term performance [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…Poly(vinyl alcohol) (PVA) is indicated as one of the most versatile polymers used for the elaboration of membranes selective towards CO 2 (for gas separation) and hydrophilic compounds (for pervaporation). In general, PVA and PVA-based polymers possess high film-forming abilities, good chemical stability, and high mechanical strength that allow their wide application [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…The acid conversion was equal to 93% during 12 h at 75 °C with 20% catalyst content that was equivalent to the 19% enhancement of acid conversion compared to an equilibrium conversion achieved in a batch reactor under the identical conditions [ 3 ]. Klepić et al [ 9 ] prepared blend PVA-based membranes containing 1-ethyl-3-methylimidazolium dicyanamide ([EMIM] [DCA]) ionic liquid by solution casting method for effective CO 2 /H 2 separation. It was found that the [EMIM] [DCA] addition of 53 wt % into PVA-based membranes led to the raise of CO 2 and H 2 permeability, the decrease of the structural polymer chains regularity in PVA structure, and the change of crystalline phase orientation.…”

Section: Introductionmentioning

confidence: 99%

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The Impact of Reactive Ionic Liquids Addition on the Physicochemical and Sorption Properties of Poly(Vinyl Alcohol)-Based Films

Rynkowska

Fatyeyeva

et al. 2020

Polymers

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A new type of hybrid polymeric-based film containing 1-(1,3-diethoxy-1,3-dioxopropan-2-ylo)-3-methylimidazolium bromide (RIL1_Br) and 1-(2-etoxy-2-oxoethyl)-3-methylimidazolium bromide (RIL2_Br) reactive ionic liquids was elaborated. Poly(vinyl alcohol) (PVA)-based films with 9–33 wt % of RILs were subsequently characterized using Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR), scanning electron microscopy (SEM), atomic force microscopy (AFM), thermogravimetric analysis (TGA) and TGA-FTIR. PVA-RIL films were also studied in tensile tests, contact angle and sorption measurements. RIL incorporation enhanced thermal and mechanical stability of PVA membranes due to the hydrogen bonds between RILs and polymer chains. Membrane swelling behavior in water (H2O), ethanol (EtOH), and propan-2-ol (IPA) and the kinetics of water sorption process revealed that PVA-RILs membranes possess the highest affinity towards water. It was pointed out that both the RIL type and the RIL amount in the polymer matrix have significant influence on the membrane swelling behavior and the water sorption kinetics.

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Permeation and sorption properties of CO2-selective blend membranes based on polyvinyl alcohol (PVA) and 1-ethyl-3-methylimidazolium dicyanamide ([EMIM][DCA]) ionic liquid for effective CO2/H2 separation

Cited by 52 publications

References 60 publications

A Review on Ionic Liquid Gas Separation Membranes

A Review on Ionic Liquid Gas Separation Membranes

Poly[3-ethyl-1-vinyl-imidazolium] diethyl phosphate/Pebax® 1657 Composite Membranes and Their Gas Separation Performance

The Impact of Reactive Ionic Liquids Addition on the Physicochemical and Sorption Properties of Poly(Vinyl Alcohol)-Based Films

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