Characterization and gas permeation properties of polyimide/ZSM-5 zeolite composite membranes containing ionic liquid

Shindo, Ryohei; Kishida, Masanori; Sawa, Hideaki; Kidesaki, Takashi; Sato, Shuichi; Kanehashi, Shinji; Nagai, Kazukiyo

doi:10.1016/j.memsci.2013.12.031

Cited by 72 publications

(49 citation statements)

References 35 publications

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“…ILs are salts that have an organic cation and an inorganic anion and whose melting point is lower than 373 K, and their vapor pressure is negligible [4,5,6]. Additionally, ILs have good thermal stability, high ionic conductivity and solubility in organic media [7].…”

Section: Introductionmentioning

confidence: 99%

Membrane modules for CO 2 capture based on PVDF hollow fibers with ionic liquids immobilized

Gómez‐Coma

Garea

Rouch

et al. 2016

Journal of Membrane Science

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Hollow fiber membrane contactors with ionic liquids are promising alternatives to traditional spray towers and amines for carbon dioxide absorption. Ionic liquids have emerged as new alternative solvents because of their zero emission features compared with amines. The aim of this work was to compare fibers based on PVDF and different additives, as well as fibers including two different ionic liquids. On the one hand, 1-ethyl-3-methylimidazolium ethyl sulfate [emim][EtSO 4 ] presents physical absorption, and on the other hand, 1-ethyl-3-methylimidazolium acetate [emim][Ac] presents chemical absorption. To compare the fibers under study, the thickness of the composite fiber was examined using scanning electron microscopy (SEM). The mechanical properties and the bubble point were also evaluated.Permeability tests were conducted, and the gas permeation of the composite hollow fibers was measured using pure CO 2 . Laboratory-made stainless steel modules were used for the tests.All of the above tests were performed with the fibers in both wet and dry conditions. It was determined that the fibers with the ionic liquid immobilized would be promising for CO 2 capture because the CO 2 permeance significantly increased. Namely, D+[emim][EtSO 4 ] achieved a 43% increase compared with the fibers without the addition of the ionic liquid, resulting in a CO 2 permeance value of 57040 NL/(h m 2 bar), which is higher than the values reported in the literature for PVDF. Moreover, the overall mass transfer coefficient for CO 2 capture using the D+[emim][Ac] fibers also presented highly competitive values.

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Section: Introductionmentioning

confidence: 99%

Membrane modules for CO 2 capture based on PVDF hollow fibers with ionic liquids immobilized

Gómez‐Coma

Garea

Rouch

et al. 2016

Journal of Membrane Science

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“…Thus, Langmuir site was depended on adamantane content. Moreover, PI that has higher T g than PMAdMA (PI: 424 °C, PMAdMA: 141 °C) restricted molecular mobility of adamantane block on one side chain. Therefore, relative pressure at clustering begin of Block(14/86) was higher than PMAdMA homopolymer.…”

Section: Resultsmentioning

confidence: 99%

Phototransparency and water vapor sorption properties of ABA‐type triblock copolymers derived from 6FDA‐TeMPD and poly(2‐methyl‐2‐adamantylmethacrylate)

Ando

Konishi

Yoshida

et al. 2016

J of Applied Polymer Sci

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The phototransparency and water vapor sorption properties of ABA-type triblock copolymer membranes derived from 4,4-(hexafluoroisopropylidene) diphthalic anhydride-2,3,5,6-tetramethyl-1,4-phenylenediamine (PI) and poly(2-methyl-2-adamantylmethacrylate) (PMAdMA) were investigated, with focus on the effect of the adamantane component. The phototransparency of PMAdMA-block-PI-block-PMAdMA [Block(PI/PMAdMA)] was about 10-20% higher than that of poly(methyl methacrylate)-block-PI-block-Poly(methylmethacrylate) [Block(PI/PMMA)] because the high symmetric structure of adamantane inhibited photoabsorbance. The water vapor solubility of Block(PI/PMAdMA) decreased with increased PMAdMA because the PMAdMA had a hydrophobic property. Interestingly, in all relative-pressure regions, Block(PI/PMAdMA) with the least PMAdMA content showed a higher solubility coefficient than PI because the high mobility of PMAdMA in Block(PI/PMAdMA) resulted in additional sorption sites in the PI segment. A comparison of Block(PI/PMAdMA) with Block(PI/PMMA) in terms of relative pressure at the beginning of clustering further revealed that cluster formation in Block(PI/PMAdMA) was inhibited compared with Block(PI/PMMA) because bulky structure of adamantane restricted the mobility of the polymer main chain. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43795.

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“…incorporated IL by stirring followed by solvent evaporation, relating the presence of IL with changes in the transport properties of gases, such as permeation and diffusion. Shindo et al . prepared, by casting, composite membranes containing imidazolium salt and verified that the thermal stability and the selective CO 2 /H 2 performance improved with the increase of IL content.…”

Section: Introductionmentioning

confidence: 98%

Polycarbonate/1‐(2‐hydroxyethyl)‐2,3‐dimethylimidazolium chloride composite membranes and short‐range chain mobility analysis

Oliveira

Vedovello

Paranhos

2017

J of Applied Polymer Sci

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In this investigation, the incorporation of imidazolium salt, 1‐(2‐hydroxehtyl)‐2,3‐dimethylimidazolium chloride [hydemmim][Cl] within bisphenol A polycarbonate (PC) matrix and the subsequent formation of membranes via casting were studied. Characterizations that aimed to establish structure‐property correlations by Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, dynamic mechanical thermal analysis, and water vapor transport (WVT) were performed. The results indicated that the presence of ionic liquid (IL) within the PC matrix significantly alter the local and macromolecular structure. The thermal stability is increased for all levels of incorporation. The plasticizing and antiplasticizing effects were observed due to the influence of the proportions of IL incorporated and of the cation's substituent chain of this IL. Distinct mechanisms of WVT were also observed in the presence of IL. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45117.

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Characterization and gas permeation properties of polyimide/ZSM-5 zeolite composite membranes containing ionic liquid

Cited by 72 publications

References 35 publications

Membrane modules for CO 2 capture based on PVDF hollow fibers with ionic liquids immobilized

Membrane modules for CO 2 capture based on PVDF hollow fibers with ionic liquids immobilized

Phototransparency and water vapor sorption properties of ABA‐type triblock copolymers derived from 6FDA‐TeMPD and poly(2‐methyl‐2‐adamantylmethacrylate)

Polycarbonate/1‐(2‐hydroxyethyl)‐2,3‐dimethylimidazolium chloride composite membranes and short‐range chain mobility analysis

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