Low viscosity protic ionic liquid for CO 2 /CH 4 separation: Thermophysical and high-pressure phase equilibria for diethylammonium butanoate

Alcântara, Murilo L.; Santos, João Paulo; Loreno, Marlon; Ferreira, Pedro I.S.; Paredes, Márcio L.L.; Cardozo‐Filho, Lúcio; Silva, Andressa K.; Lião, Luciano M.; Pires, C. A. M.; Mattedi, Silvana

doi:10.1016/j.fluid.2017.12.001

Cited by 31 publications

(33 citation statements)

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“…There was also a subtle decrease in the density value with an increase in temperature. These trends were expected because they have been commonly observed among other substances reported in the literature (Alcantara et al 2018 ; Song et al 2021 ; Sarabando et al 2019 ).…”

Section: Resultssupporting

confidence: 75%

“…0.99 g/g. These values were of the same order as the ILs synthesized and published by Alcantara et al ( 2018 ) and Nascimento et al ( 2020 ), who used the same synthesis methodology.…”

Section: Resultsmentioning

confidence: 63%

“…To guarantee the homogeneity of the concentrations of the solutions to be used to measure the physical–chemical properties of the IL, a unique solution was prepared for each of the ILs ([DBA][Ac], [DBA][Pr], and [DBA][Bu]). Using these solutions, aliquots were removed to determine the IL properties (Alcantara et al 2018 ).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Physical and chemical properties of binary mixtures of dibutylammonium-based ionic liquids and water

Costa

Paixão

Zimmermann

et al. 2021

Braz. J. Chem. Eng.

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Section: Resultssupporting

confidence: 75%

“…0.99 g/g. These values were of the same order as the ILs synthesized and published by Alcantara et al ( 2018 ) and Nascimento et al ( 2020 ), who used the same synthesis methodology.…”

Section: Resultsmentioning

confidence: 63%

See 1 more Smart Citation

Physical and chemical properties of binary mixtures of dibutylammonium-based ionic liquids and water

Costa

Paixão

Zimmermann

et al. 2021

Braz. J. Chem. Eng.

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“…However, some of the ILs (e.g., [P 4442 ][Cy-Suc], 2567 mPa•s at 303.15 K) [8] and DESs (e.g., [MTPP][Br]-GLY 1:4, 1658 mPa•s at 298.15 K) [9] have high viscosities that influence the rate of absorptions, inhibiting their industry applications. To cope with this disadvantage, hybrid ILs or DESs with water have been strongly recommended [9][10][11][12][13][14]. For example, Zhang et (90 wt %) + H 2 O (10 wt %)) [13].…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquids/Deep Eutectic Solvents-Based Hybrid Solvents for CO2 Capture

Liu

Dai

et al. 2020

Crystals

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The CO2 solubilities (including CO2 Henry’s constants) and viscosities in ionic liquids (ILs)/deep eutectic solvents (DESs)-based hybrid solvents were comprehensively collected and summarized. The literature survey results of CO2 solubility illustrated that the addition of hybrid solvents to ILs/DESs can significantly enhance the CO2 solubility, and some of the ILs-based hybrid solvents are super to DESs-based hybrid solvents. The best hybrid solvents of IL–H2O, IL–organic, IL–amine, DES–H2O, and DES–organic are [DMAPAH][Formate] (2.5:1) + H2O (20 wt %) (4.61 mol/kg, 298 K, 0.1 MPa), [P4444][Pro] + PEG400 (70 wt %) (1.61 mol/kg, 333.15 K, 1.68 MPa), [DMAPAH][Formate] (2.0:1) + MEA (30 wt %) (6.24 mol/kg, 298 K, 0.1 MPa), [TEMA][Cl]-GLY-H2O 1:2:0.11 (0.66 mol/kg, 298 K, 1.74 MPa), and [Ch][Cl]-MEA 1:2 + DBN 1:1 (5.11 mol/kg, 298 K, 0.1 MPa), respectively. All of these best candidates show higher CO2 solubility than their used pure ILs or DESs, evidencing that IL/DES-based hybrid solvents are remarkable for CO2 capture. For the summarized viscosity results, the presence of hybrid solvents in ILs and DESs can decrease their viscosities. The lowest viscosities acquired in this work for IL–H2O, IL–amine, DES–H2O, and DES–organic hybrid solvents are [DEA][Bu] + H2O (98.78 mol%) (0.59 mPa·s, 343.15 K), [BMIM][BF4] + DETA (94.9 mol%) (2.68 mPa·s, 333.15 K), [L-Arg]-GLY 1:6 + H2O (60 wt %) (2.7 mPa·s, 353.15 K), and [MTPP][Br]-LEV-Ac 1:3:0.03 (16.16 mPa·s, 333.15 K) at 0.1 MPa, respectively.

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“…The solubilities of CO 2 , CH 4 , C 2 H 6 , N 2 and O 2 in several aprotic ILs have been studied extensively [ 12 , 13 , 14 , 15 ]. On the contrary, the thermodynamic properties of protic ionic liquids, i.e., those comprising proton-donor and proton-acceptor centers in their molecules, have been investigated in lower extent [ 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Exploring the Gas-Permeation Properties of Proton-Conducting Membranes Based on Protic Imidazolium Ionic Liquids: Application in Natural Gas Processing

et al. 2018

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This experimental study explores the potential of supported ionic liquid membranes (SILMs) based on protic imidazolium ionic liquids (ILs) and randomly nanoporous polybenzimidazole (PBI) supports for CH4/N2 separation. In particular, three classes of SILMs have been prepared by the infiltration of porous PBI membranes with different protic moieties: 1-H-3-methylimidazolium bis (trifluoromethane sulfonyl)imide; 1-H-3-vinylimidazolium bis(trifluoromethane sulfonyl)imide followed by in situ ultraviolet (UV) polymerization to poly[1-(3H-imidazolium)ethylene] bis(trifluoromethanesulfonyl)imide. The polymerization process has been monitored by Fourier transform infrared (FTIR) spectroscopy and the concentration of the protic entities in the SILMs has been evaluated by thermogravimetric analysis (TGA). Single gas permeability values of N2 and CH4 at 313 K, 333 K and 363 K were obtained from a series of experiments conducted in a batch gas permeance system. The results obtained were assessed in terms of the preferential cavity formation and favorable solvation of methane in the apolar domains of the protic ionic network. The most attractive behavior exhibited poly[1-(3H-imidazolium)ethylene]bis(trifluoromethanesulfonyl)imide polymeric ionic liquid (PIL) cross-linked with 1% divinylbenzene supported membranes, showing stable performance when increasing the upstream pressure. The CH4/N2 permselectivity value of 2.1 with CH4 permeability of 156 Barrer at 363 K suggests that the transport mechanism of the as-prepared SILMs is solubility-dominated.

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Low viscosity protic ionic liquid for CO 2 /CH 4 separation: Thermophysical and high-pressure phase equilibria for diethylammonium butanoate

Cited by 31 publications

References 50 publications

Physical and chemical properties of binary mixtures of dibutylammonium-based ionic liquids and water

Physical and chemical properties of binary mixtures of dibutylammonium-based ionic liquids and water

Ionic Liquids/Deep Eutectic Solvents-Based Hybrid Solvents for CO2 Capture

Exploring the Gas-Permeation Properties of Proton-Conducting Membranes Based on Protic Imidazolium Ionic Liquids: Application in Natural Gas Processing

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