Modelling Gas Separation in Porous Membranes

Thornton, Aaron W.; Hill, James M.; Hill, Anita J.

doi:10.1002/9780470665626.ch5

Cited by 20 publications

(31 citation statements)

References 55 publications

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“… Robeson's upper bound plot of CO 2 /N 2 selectivity as a function of CO 2 permeability for PEO/PMAA multilayer thin films (red and green data points) and various other homogeneous polymer membranes (blue dots) (data from Membrane Society of Australasia database) . [Color figure can be viewed at http://wileyonlinelibrary.com]…”

Section: Resultsmentioning

confidence: 99%

Highly selective multilayer polymer thin films for CO₂/N₂ separation

Song

Lugo

Powell

et al. 2017

J Polym Sci B Polym Phys

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Multilayer thin films of poly(ethylene oxide) (PEO) and poly(methacrylic acid) (PMAA), deposited via layer‐by‐layer (LbL) assembly from aqueous solutions, are investigated for CO2/N2 separation. Eight and ten bilayer (217 and 389 nm thick, respectively) PEO/PMAA thin films deposited on a 25 μm polystyrene substrate exhibit CO2/N2 selectivities of 142 and 136, respectively. These are the highest reported to‐date for this gas pair separation using a homogeneous polymer film. While further work remains to improve CO2 permeability, these results indicate the potential of LbL assemblies as standalone CO2 separation membranes for low‐flux/high‐purity applications, or as part of a composite and/or mixed‐matrix membrane for high‐flux applications. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 1730–1737

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Section: Resultsmentioning

confidence: 99%

Highly selective multilayer polymer thin films for CO₂/N₂ separation

Song

Lugo

Powell

et al. 2017

J Polym Sci B Polym Phys

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“…If the limiting step for mass transfer overcomes the diffusion energy barrier, it is denominated as an activated diffusion. [37] The ratio between the permeability values of two pure species (i, j) under ideal conditions is known as the ideal selectivity of the membrane (α ¼ ρ i /ρ j ). Flux and selectivity can be used as universal parameters to compare membranes against each other, but the fundamental mechanism behind the permeation of a species through the membrane is unique to the type of membrane.…”

Section: Nonbiological Mediamentioning

confidence: 99%

“…If the limiting step for mass transfer overcomes the diffusion energy barrier, it is denominated as an activated diffusion. [ 37 ]…”

Section: Detection Technologies For Dissolved Hydrogenmentioning

confidence: 99%

Detection of Hydrogen Dissolved in Liquid Media: A Review and Outlook

Castro-Carranza

Vega-Hernández

Nolasco

et al. 2022

Physica Status Solidi (a)

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As hydrogen continues to become rather promising for the generation of clean and sustainable energy, effective and low‐cost sensors are progressively necessary to ensure safety and efficiency of H‐based energy generation processes. Although a wide variety of hydrogen sensors for the gas phase is available, there is still a lack of devices to detect, measure, and track dissolved hydrogen. Determining its concentration is environmentally, economically, and phenomenologically relevant for applications such as offshore transport pipelines, anaerobic generation reactors, and even in electrical transformers. Herein, the technologies for sensing hydrogen dissolved in liquid media are compiled and reviewed, providing a debrief on their operation mechanisms, applications, and features, as well as an outlook of the field to be explored with new functional materials for devices applied on it.

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“…Activated‐, surface‐, and Knudsen‐diffusion mechanisms can account for the diffusion in polymer porous membranes according to their pore size ρ (ρ < ρ min , ρ min < ρ < ρ min , ρ > ρ K , respectively) …”

Section: Membrane Processesmentioning

confidence: 99%

Light‐Responsive Polymer Membranes

Pantuso

Filpo

Nicoletta

2019

Advanced Optical Materials

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Stimuli‐responsive polymer membranes have gained particular attention for the ability to tune opportunely their physicochemical properties under the application of an external stimulus. Heat, pH value, ionic strength, pressure, humidity, electric and magnetic fields, antigen/antibody interactions, chemical reactions, and light can be used as triggers for specific responses in polymer membranes. In particular, light is a fascinating stimulus, as it is a green energy, which can be modulated in a precise and convenient way. In addition, it allows remote and contactless interactions without changing the original chemical environment. This review reports recent progresses in light‐responsive polymer membranes with particular attention to chemical groups and responsive mechanisms.

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Modelling Gas Separation in Porous Membranes

Cited by 20 publications

References 55 publications

Highly selective multilayer polymer thin films for CO₂/N₂ separation

Highly selective multilayer polymer thin films for CO₂/N₂ separation

Detection of Hydrogen Dissolved in Liquid Media: A Review and Outlook

Light‐Responsive Polymer Membranes

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Modelling Gas Separation in Porous Membranes

Cited by 20 publications

References 55 publications

Highly selective multilayer polymer thin films for CO2/N2 separation

Highly selective multilayer polymer thin films for CO2/N2 separation

Detection of Hydrogen Dissolved in Liquid Media: A Review and Outlook

Light‐Responsive Polymer Membranes

Contact Info

Product

Resources

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Highly selective multilayer polymer thin films for CO₂/N₂ separation

Highly selective multilayer polymer thin films for CO₂/N₂ separation