Water Vapour Promotes CO<sub>2</sub> Transport in Poly(ionic liquid)/Ionic Liquid-Based Thin-Film Composite Membranes Containing Zinc Salt for Flue Gas Treatment
A poly(ionic-liquid) (PIL) matrix can be altered by incorporating additives that will disrupt the polymer chain packing, such as an ionic liquid (IL) and inorganic salts to boost their exploitation as materials for membrane production to be used in CO2 capture. Herein, potential of PIL/IL/salt blend...
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doaj-77098c72e7794e9fac2a62ef3324f2f72020-11-25T03:46:33ZengMDPI AGApplied Sciences2076-34172020-06-01103859385910.3390/app10113859Water Vapour Promotes CO<sub>2</sub> Transport in Poly(ionic liquid)/Ionic Liquid-Based Thin-Film Composite Membranes Containing Zinc Salt for Flue Gas TreatmentDaria Nikolaeva0Sandrine Loïs1Paul Inge Dahl2Marius Sandru3Jolanta Jaschik4Marek Tanczyk5Alessio Fuoco6Johannes Carolus Jansen7Ivo F.J. Vankelecom8Membrane Technology Group (MTG), cMACS, Faculty Bio-science Engineering, Celestijnenlaan 200F, 3001 Leuven, BelgiumSOLVIONIC, Site Bioparc 195, route D’Espagne, BP1169, 31036 Toulouse CEDEX 1, FranceSINTEF Industry, Richard Birkelands vei 2B, 7034 Trondheim, NorwaySINTEF Industry, Richard Birkelands vei 2B, 7034 Trondheim, NorwayInstitute of Chemical Engineering, Polish Academy of Sciences, ul. Bałtycka 5, 44-100 Gliwice, PolandInstitute of Chemical Engineering, Polish Academy of Sciences, ul. Bałtycka 5, 44-100 Gliwice, PolandInstitute on Membrane Technology, CNR-ITM, Via P. Bucci 17/C, 87036 Rende (CS), ItalyInstitute on Membrane Technology, CNR-ITM, Via P. Bucci 17/C, 87036 Rende (CS), ItalyMembrane Technology Group (MTG), cMACS, Faculty Bio-science Engineering, Celestijnenlaan 200F, 3001 Leuven, BelgiumA poly(ionic-liquid) (PIL) matrix can be altered by incorporating additives that will disrupt the polymer chain packing, such as an ionic liquid (IL) and inorganic salts to boost their exploitation as materials for membrane production to be used in CO2 capture. Herein, potential of PIL/IL/salt blends is investigated on the example of poly(diallyldimethyl ammonium) bis(trifluoromethylsulfonyl)imide (P[DADMA][Tf2N]) with N-butyl-N-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ([Pyrr14][Tf2N]) and zinc di-bis(trifluoromethylsulfonyl)imide (Zn[Tf2N]2). Composite material with IL and a higher amount of Zn<sup>2</sup>+ showed an increase in the equilibrium CO2 sorption capacity to 2.77 [qualifier-mode = brackets,mode=text]cm3.\ofSTP.cm-3.bar-1. Prepared blends were successfully processed into thick, dense membranes and thin-film composite membranes. Their CO2 separation efficiency was determined using ideal and mixed-gas feed (vol% CO2<inline-formula> <math display="inline"> <semantics> <mrow> <mo>=</mo> <mn>50</mn> </mrow> </semantics> </math> </inline-formula>, dry and with 90 % relative humidity). The dominant role of solubility in the transport mechanism is confirmed by combining direct gravimetric sorption measurements and indirect estimations from time-lag experiments. The maximum incorporated amount of Zn<sup>2</sup>+ salts increased equilibrium solubility selectivity by at least 50 % in comparison to the parent PIL. All materials showed increased CO2 permeance values by at least 30% in dry conditions, and 60 % in humidified conditions when compared to the parent PIL; the performance of pure PIL remained unchanged upon addition of water vapor to the feed stream. Mixed-gas selectivities for all materials rose by 10 % in humidified conditions when compared to dry feed experiments. Our results confirm that the addition of IL improves the performance of PIL-based composites due to lower stiffness of the membrane matrix. The addition of Zn<sup>2</sup>+-based salt had a marginal effect on CO2 separation efficiency, suggesting that the cation participates in the facilitated transport of CO2.https://www.mdpi.com/2076-3417/10/11/3859flue gaspoly(ionic liquid)CO<sub>2</sub> transportthin-film compositesrelative humidityzinc |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Daria Nikolaeva Sandrine Loïs Paul Inge Dahl Marius Sandru Jolanta Jaschik Marek Tanczyk Alessio Fuoco Johannes Carolus Jansen Ivo F.J. Vankelecom |
spellingShingle |
Daria Nikolaeva Sandrine Loïs Paul Inge Dahl Marius Sandru Jolanta Jaschik Marek Tanczyk Alessio Fuoco Johannes Carolus Jansen Ivo F.J. Vankelecom Water Vapour Promotes CO<sub>2</sub> Transport in Poly(ionic liquid)/Ionic Liquid-Based Thin-Film Composite Membranes Containing Zinc Salt for Flue Gas Treatment Applied Sciences flue gas poly(ionic liquid) CO<sub>2</sub> transport thin-film composites relative humidity zinc |
author_facet |
Daria Nikolaeva Sandrine Loïs Paul Inge Dahl Marius Sandru Jolanta Jaschik Marek Tanczyk Alessio Fuoco Johannes Carolus Jansen Ivo F.J. Vankelecom |
author_sort |
Daria Nikolaeva |
title |
Water Vapour Promotes CO<sub>2</sub> Transport in Poly(ionic liquid)/Ionic Liquid-Based Thin-Film Composite Membranes Containing Zinc Salt for Flue Gas Treatment |
title_short |
Water Vapour Promotes CO<sub>2</sub> Transport in Poly(ionic liquid)/Ionic Liquid-Based Thin-Film Composite Membranes Containing Zinc Salt for Flue Gas Treatment |
title_full |
Water Vapour Promotes CO<sub>2</sub> Transport in Poly(ionic liquid)/Ionic Liquid-Based Thin-Film Composite Membranes Containing Zinc Salt for Flue Gas Treatment |
title_fullStr |
Water Vapour Promotes CO<sub>2</sub> Transport in Poly(ionic liquid)/Ionic Liquid-Based Thin-Film Composite Membranes Containing Zinc Salt for Flue Gas Treatment |
title_full_unstemmed |
Water Vapour Promotes CO<sub>2</sub> Transport in Poly(ionic liquid)/Ionic Liquid-Based Thin-Film Composite Membranes Containing Zinc Salt for Flue Gas Treatment |
title_sort |
water vapour promotes co<sub>2</sub> transport in poly(ionic liquid)/ionic liquid-based thin-film composite membranes containing zinc salt for flue gas treatment |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2020-06-01 |
description |
A poly(ionic-liquid) (PIL) matrix can be altered by incorporating additives that will disrupt the polymer chain packing, such as an ionic liquid (IL) and inorganic salts to boost their exploitation as materials for membrane production to be used in CO2 capture. Herein, potential of PIL/IL/salt blends is investigated on the example of poly(diallyldimethyl ammonium) bis(trifluoromethylsulfonyl)imide (P[DADMA][Tf2N]) with N-butyl-N-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ([Pyrr14][Tf2N]) and zinc di-bis(trifluoromethylsulfonyl)imide (Zn[Tf2N]2). Composite material with IL and a higher amount of Zn<sup>2</sup>+ showed an increase in the equilibrium CO2 sorption capacity to 2.77 [qualifier-mode = brackets,mode=text]cm3.\ofSTP.cm-3.bar-1. Prepared blends were successfully processed into thick, dense membranes and thin-film composite membranes. Their CO2 separation efficiency was determined using ideal and mixed-gas feed (vol% CO2<inline-formula> <math display="inline"> <semantics> <mrow> <mo>=</mo> <mn>50</mn> </mrow> </semantics> </math> </inline-formula>, dry and with 90 % relative humidity). The dominant role of solubility in the transport mechanism is confirmed by combining direct gravimetric sorption measurements and indirect estimations from time-lag experiments. The maximum incorporated amount of Zn<sup>2</sup>+ salts increased equilibrium solubility selectivity by at least 50 % in comparison to the parent PIL. All materials showed increased CO2 permeance values by at least 30% in dry conditions, and 60 % in humidified conditions when compared to the parent PIL; the performance of pure PIL remained unchanged upon addition of water vapor to the feed stream. Mixed-gas selectivities for all materials rose by 10 % in humidified conditions when compared to dry feed experiments. Our results confirm that the addition of IL improves the performance of PIL-based composites due to lower stiffness of the membrane matrix. The addition of Zn<sup>2</sup>+-based salt had a marginal effect on CO2 separation efficiency, suggesting that the cation participates in the facilitated transport of CO2. |
topic |
flue gas poly(ionic liquid) CO<sub>2</sub> transport thin-film composites relative humidity zinc |
url |
https://www.mdpi.com/2076-3417/10/11/3859 |
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