Humid permeation of CO2 and hydrocarbons in Aquivion® perfluorosulfonic acid ionomer membranes, experimental and modeling

Olivieri, Luca M.; Aboukeila, Hesham; Baschetti, Marco Giacinti; Pizzi, Diego; Merlo, Luca; Sarti, Giulio Cesare

doi:10.1016/j.memsci.2017.08.030

Cited by 29 publications

(25 citation statements)

References 61 publications

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“…Poly-vinyl amine membranes were also tested in a pilot scale plant in 2013 by the same research group [ 42 ] showing stability of performance over four months of test and another pilot scale test was conducted in 2017 and reported here, [ 43 ]. Nowadays, concerning FTM for CO 2 separations, the hybrid systems containing nanofillers [ 44 , 45 , 46 ] as well as mobile and fixed sites carrier, such as ionic liquids or amino acid salts or polymers containing suitable pendant groups, [ 47 , 48 , 49 , 50 , 51 , 52 ] are investigated to increase membrane stability and at the same time to obtain high selectivity and permeability.…”

Section: Introductionmentioning

confidence: 99%

Models for Facilitated Transport Membranes: A Review

2019

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Facilitated transport membranes are particularly promising in different separations, as they are potentially able to overcome the trade-off behavior usually encountered in solution-diffusion membranes. The reaction activated transport is a process in which several mechanisms take place simultaneously, and requires a rigorous theoretical analysis, which unfortunately is often neglected in current studies more focused on material development. In this work, we selected and reviewed the main mathematical models introduced to describe mobile and fixed facilitated transport systems in steady state conditions, in order to provide the reader with an overview of the existing mathematical tools. An analytical solution to the mass transport problem cannot be achieved, even when considering simple reaction schemes such as that between oxygen (solute) and hemoglobin (carrier) ( A + C ⇄ A C ), that was thoroughly studied by the first works dealing with this type of biological facilitated transport. Therefore, modeling studies provided approximate analytical solutions and comparison against experimental observations and exact numerical calculations. The derivation, the main assumptions, and approximations of such modeling approaches is briefly presented to assess their applicability, precision, and flexibility in describing and understanding mobile and fixed site carriers facilitated transport membranes. The goal is to establish which mathematical tools are more suitable to support and guide the development and design of new facilitated transport systems and materials. Among the models presented, in particular, those from Teramoto and from Morales-Cabrera et al. seem the more flexible and general ones for the mobile carrier case, while the formalization made by Noble and coauthors appears the most complete in the case of fixed site carrier membranes.

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Section: Introductionmentioning

confidence: 99%

Models for Facilitated Transport Membranes: A Review

2019

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“…15 Sulfonated ionomers have recently received increasing attention for membrane-based CO 2 capture applications. 16,17 Among this class of polymers, Nafion is a well-established polyelectrolyte commonly used as a polymer electrolyte membrane (PEM) in low-temperature fuel cells and water electrolyzers. 18 It belongs to the family of sulfonated tetrafluoroethylene-based fluoropolymer-copolymers developed in the late 1960s by DuPont.…”

Section: Introductionmentioning

confidence: 99%

Nafion/IL hybrid membranes with tuned nanostructure for enhanced CO₂ separation: effects of ionic liquid and water vapor

et al. 2018

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“…The single gas permeation results for carbon dioxide for the different membranes tested are presented in Figure 10 as a function of relative humidity and for further clarity in Table 2, where CO 2 /N 2 selectivity are also reported, when available. As quite common for hydrophilic membranes, permeability increased exponentially with the degree of humidification [67] due to the high water sorption and consecutive membrane swelling.…”

Section: Resultsmentioning

confidence: 99%

Polyvinylamine Membranes Containing Graphene-Based Nanofillers for Carbon Capture Applications

et al. 2019

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In the present study, the separation performance of new self-standing polyvinylamine (PVAm) membranes loaded with few-layer graphene (G) and graphene oxide (GO) was evaluated, in view of their use in carbon capture applications. PVAm, provided by BASF as commercial product named LupaminTM, was purified obtaining PVAm films with two degrees of purification: Low Grade (PVAm-LG) and High Grade (PVAm-HG). These two-grade purified PVAm were loaded with 3 wt% of graphene and graphene oxide to improve mechanical stability: indeed, pristine tested materials proved to be brittle when dry, while highly susceptible to swelling in humid conditions. Purification performances were assessed through FTIR-ATR spectroscopy, DSC and TGA analysis, which were carried out to characterize the pristine polymer and its nanocomposites. In addition, the membranes′ fracture surfaces were observed through SEM analysis to evaluate the degree of dispersion. Water sorption and gas permeation tests were performed at 35 °C at different relative humidity (RH), ranging from 50% to 95%. Overall, composite membranes showed improved mechanical stability at high humidity, and higher glass transition temperature (Tg) with respect to neat PVAm. Ideal CO2/N2 selectivity up to 80 was measured, paired with a CO2 permeability of 70 Barrer. The membranes’ increased mechanical stability against swelling, even at high RH, without the need of any crosslinking, represents an interesting result in view of possible further development of new types of facilitated transport composite membranes.

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Humid permeation of CO2 and hydrocarbons in Aquivion® perfluorosulfonic acid ionomer membranes, experimental and modeling

Cited by 29 publications

References 61 publications

Models for Facilitated Transport Membranes: A Review

Models for Facilitated Transport Membranes: A Review

Nafion/IL hybrid membranes with tuned nanostructure for enhanced CO₂ separation: effects of ionic liquid and water vapor

Polyvinylamine Membranes Containing Graphene-Based Nanofillers for Carbon Capture Applications

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Humid permeation of CO2 and hydrocarbons in Aquivion® perfluorosulfonic acid ionomer membranes, experimental and modeling

Cited by 29 publications

References 61 publications

Models for Facilitated Transport Membranes: A Review

Models for Facilitated Transport Membranes: A Review

Nafion/IL hybrid membranes with tuned nanostructure for enhanced CO2 separation: effects of ionic liquid and water vapor

Polyvinylamine Membranes Containing Graphene-Based Nanofillers for Carbon Capture Applications

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Nafion/IL hybrid membranes with tuned nanostructure for enhanced CO₂ separation: effects of ionic liquid and water vapor