Highly selective CO<sub>2</sub> separation membranes through tunable poly(4-vinylphenolate)–CO<sub>2</sub> interactions

Hammann, Markus; Castillo, Dante; Anger, Christian A.; Rieger, Bernhard

doi:10.1039/c4ta03696d

Cited by 15 publications

(19 citation statements)

References 53 publications

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“…Other heteroions in the cationic moieties may also be used, i.e., phosphonium, sulphonium, boronium. However, their application in membrane-based CO 2 capture remains limited [71].…”

Section: Cation-functionalised Polyelectrolytesmentioning

confidence: 99%

“…Polyanions comprising sulphonate and sulphate anionic moieties (i.e., PSS, heparin, poly(vinyl sulphonate) salts) yield highly stable PE films through the formation of strong and irreversibly ionically cross-linked pairs [80]. While this makes them the go-to solution for PE membrane synthesis, expansion of polyanion pool enables broader choice for task specific PE implemented in CO 2 capture [71]. For instance, phosphonium-based hydroxides and carbonate present a successful case of stable thin-films with reversible CO 2 solubility.…”

Section: Anion-functionalised Polyelectrolytesmentioning

confidence: 99%

“…For instance, phosphonium-based hydroxides and carbonate present a successful case of stable thin-films with reversible CO 2 solubility. As such the provide a solid base for their application as CO 2 selective TFC membranes [71]. Even less frequently used polyanions are ones incorporating phosphates and phosphonates which exhibit relatively low pKa values and are stable against hydrolysis of the anionic groups [61,71].…”

Section: Anion-functionalised Polyelectrolytesmentioning

confidence: 99%

“…As such the provide a solid base for their application as CO 2 selective TFC membranes [71]. Even less frequently used polyanions are ones incorporating phosphates and phosphonates which exhibit relatively low pKa values and are stable against hydrolysis of the anionic groups [61,71]. However, to the best of our knowledge, these polyanions have not found any application in membrane-based CO 2 separation from flue gas yet.…”

Section: Anion-functionalised Polyelectrolytesmentioning

confidence: 99%

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Top-Down Polyelectrolytes for Membrane-Based Post-Combustion CO2 Capture

Nikolaeva

Luis

2020

Molecules

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Polymer-based CO2 selective membranes offer an energy efficient method to separate CO2 from flue gas. ‘Top-down’ polyelectrolytes represent a particularly interesting class of polymer materials based on their vast synthetic flexibility, tuneable interaction with gas molecules, ease of processability into thin films, and commercial availability of precursors. Recent developments in their synthesis and processing are reviewed herein. The four main groups of post-synthetically modified polyelectrolytes discern ionised neutral polymers, cation and anion functionalised polymers, and methacrylate-derived polyelectrolytes. These polyelectrolytes differentiate according to the origin and chemical structure of the precursor polymer. Polyelectrolytes are mostly processed into thin-film composite (TFC) membranes using physical and chemical layer deposition techniques such as solvent-casting, Langmuir-Blodgett, Layer-by-Layer, and chemical grafting. While solvent-casting allows manufacturing commercially competitive TFC membranes, other methods should still mature to become cost-efficient for large-scale application. Many post-synthetically modified polyelectrolytes exhibit outstanding selectivity for CO2 and some overcome the Robeson plot for CO2/N2 separation. However, their CO2 permeance remain low with only grafted and solvent-casted films being able to approach the industrially relevant performance parameters. The development of polyelectrolyte-based membranes for CO2 separation should direct further efforts at promoting the CO2 transport rates while maintaining high selectivities with additional emphasis on environmentally sourced precursor polymers.

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“…Other heteroions in the cationic moieties may also be used, i.e., phosphonium, sulphonium, boronium. However, their application in membrane-based CO 2 capture remains limited [71].…”

Section: Cation-functionalised Polyelectrolytesmentioning

confidence: 99%

Section: Anion-functionalised Polyelectrolytesmentioning

confidence: 99%

Section: Anion-functionalised Polyelectrolytesmentioning

confidence: 99%

Section: Anion-functionalised Polyelectrolytesmentioning

confidence: 99%

See 2 more Smart Citations

Top-Down Polyelectrolytes for Membrane-Based Post-Combustion CO2 Capture

Nikolaeva

Luis

2020

Molecules

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“…Compared to other gas separation technologies such as adsorption, absorption, and cryogenics, membrane technology has many advantages including facile preparation processes, low energy cost, and remarkable reliability [1][2][3][4][5]. With these promising features, membrane technology has been a significant part of the strategy for the CO 2 removal industry and advanced commercial applications.…”

Section: Introductionmentioning

confidence: 98%

A highly selective PEGBEM-g-POEM comb copolymer membrane for CO2/N2 separation

Park

Lee

Jung

et al. 2015

Journal of Membrane Science

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Gated Channels and Selectivity Tuning of CO₂ over N₂ Sorption by Post‐Synthetic Modification of a UiO‐66‐Type Metal–Organic Framework

Kronast

Eckstein

Altenbuchner

et al. 2016

Chemistry A European J

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The highly porous and stable metal-organic framework (MOF) UiO-66 was altered using post-synthetic modifications (PSMs). Prefunctionalization allowed the introduction of carbon double bonds into the framework through a four-step synthesis from 2-bromo-1,4-benzenedicarboxylic acid; the organic linker 2-allyl-1,4-benzenedicarboxylic acid was obtained. The corresponding functionalized MOF (UiO-66-allyl) served as a platform for further PSMs. From UiO-66-allyl, epoxy, dibromide, thioether, diamine, and amino alcohol functionalities were synthesized. The abilities of these compounds to adsorb CO2 and N2 were compared, which revealed the structure-selectivity correlations. All synthesized MOFs showed profound thermal stability together with an increased ability for selective CO2 uptake and molecular gate functionalities at low temperatures.

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Highly selective CO₂ separation membranes through tunable poly(4-vinylphenolate)–CO₂ interactions

Abstract: Reactive transport enhancement of CO2 in poly(4-vinylphenolate)s.

Cited by 15 publications

References 53 publications

Top-Down Polyelectrolytes for Membrane-Based Post-Combustion CO2 Capture

Top-Down Polyelectrolytes for Membrane-Based Post-Combustion CO2 Capture

A highly selective PEGBEM-g-POEM comb copolymer membrane for CO2/N2 separation

Gated Channels and Selectivity Tuning of CO₂ over N₂ Sorption by Post‐Synthetic Modification of a UiO‐66‐Type Metal–Organic Framework

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Highly selective CO2 separation membranes through tunable poly(4-vinylphenolate)–CO2 interactions

Abstract: Reactive transport enhancement of CO2 in poly(4-vinylphenolate)s.

Cited by 15 publications

References 53 publications

Top-Down Polyelectrolytes for Membrane-Based Post-Combustion CO2 Capture

Top-Down Polyelectrolytes for Membrane-Based Post-Combustion CO2 Capture

A highly selective PEGBEM-g-POEM comb copolymer membrane for CO2/N2 separation

Gated Channels and Selectivity Tuning of CO2 over N2 Sorption by Post‐Synthetic Modification of a UiO‐66‐Type Metal–Organic Framework

Contact Info

Product

Resources

About

Highly selective CO₂ separation membranes through tunable poly(4-vinylphenolate)–CO₂ interactions

Gated Channels and Selectivity Tuning of CO₂ over N₂ Sorption by Post‐Synthetic Modification of a UiO‐66‐Type Metal–Organic Framework