Carbon molecular sieve membrane with tunable microstructure for CO2 separation: Effect of multiscale structures of polyimide precursors

Hou, Mengjie; Qi, Wenbo; Liu, Lin; Xu, Ruisong; Xue, Jiajia; Zhang, Yongyue; Song, Chengwen; Wang, Tonghua

doi:10.1016/j.memsci.2021.119541

Cited by 70 publications

(12 citation statements)

References 54 publications

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“…Permselectivity of PBI-6F and CMSM-600 for the CO 2 /CH 4 (35/65% mol) binary mixture in comparison with other CMSMs. − The 2001 and 2008 Robeson upper bound plots are shown as dot-dash and dashed lines, correspondingly.…”

Section: Resultsmentioning

confidence: 99%

Fluorinated Polybenzimidazole as a Novel Precursor for Carbon Molecular Sieve Membranes with Enhanced Gas Separation Properties

Olvera‐Mancilla

Aguilar‐Lugo

Fomina

et al. 2022

Ind. Eng. Chem. Res.

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This study reports the preparation and characterization of a carbon molecular sieve membrane (CMSM-600) derived from a processable high molecular weight fluorinated polybenzimidazole (PBI-6F). This CMSM-600 exhibits excellent separation performance for several gas pairs. CMSM-600 permeability for CO 2 was more than 300 times higher than the permeability of PBI-6F, with around a 1.5-fold increase in the CO 2 /CH 4 selectivity. These values (P CO 2 = 7920 Barrer, α CO 2 /CH 4 = 75) were well above the 2008 Robeson upper limit. The structure of the CMSM-600 was studied by Raman, XPS, and XRD analyses. The XPS spectroscopy showed the formation of pyrrole-and pyrazine-type units within the same strand promoting a less compact structure, which would explain its high permeability values as compared to those found for other polybenzimidazole derivatives. The improvement in gas separation properties can be attributed to the formation of more open micropores maintaining the ultramicropores during the pyrolysis of PBI-6F.

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Section: Resultsmentioning

confidence: 99%

Fluorinated Polybenzimidazole as a Novel Precursor for Carbon Molecular Sieve Membranes with Enhanced Gas Separation Properties

Olvera‐Mancilla

Aguilar‐Lugo

Fomina

et al. 2022

Ind. Eng. Chem. Res.

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“…[110]. There has been extensive research revealing that temperature affects the production of carbon structure, including its separation performance selectivity and permeability, and that an increase in pyrolysis temperature leads to more crystallinity and smaller layer spacing [109][110][111][112][113][114][115][116][117][118][119][120]. By controlling the heating rate sequence, pyrolysis produces products with different volatilities and results in a final weight loss [130,131].…”

Section: Pyrolysismentioning

confidence: 99%

The Development of Carbon Membrane for Gas Separation: A Review

A.¹,

Yousef²,

A.³

2022

Int. J. Membrane Sci. Techno.

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The applications of carbon membranes are becoming more important than ever due to their resilient mechanical strength, stability, and separation performance. The production of carbon membranes involves a suitable precursor that is being subjective to a pyrolysis process under controlled operating conditions that will result a porous structure to be utilized in many different separation applications. Thus, by understanding the preparation aspects of this fabrication process, the product can be manipulated, to optimize the best preparation procedure for obtaining the desired properties of a given type of membrane. This paper reviews the preparation aspects of carbon membranes, that can be manipulated to enhance the overall separation performance.

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“…During the thermal treatment process, the disordered polymeric structures tend to form ordered slit-like carbon structures as the pathway for H 2 gas transport. 28,29 Different kinds of polymeric materials, including polyimide and its derivatives, [30][31][32][33][34] cellulose and its derivatives, 35 poly(arylene ether ketone), [36][37][38] poly(phenylene oxide) 39,40 and polybenzimidazole, 41 have been employed as the precursors to fabricate CMS membranes for H 2 purication. Compared to pristine polymeric membranes, CMS membranes have excellent gas separation performance for hydrogen purication, which can exceed the Robeson upper bounds of polymeric membranes that plot a trade-off relationship between the gas permeability and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Nanoarchitectonics of carbon molecular sieve membranes with graphene oxide and polyimide for hydrogen purification

Wen

Liu

et al. 2023

RSC Adv.

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Carbon molecular sieve membrane with tunable microstructure for CO2 separation: Effect of multiscale structures of polyimide precursors

Cited by 70 publications

References 54 publications

Fluorinated Polybenzimidazole as a Novel Precursor for Carbon Molecular Sieve Membranes with Enhanced Gas Separation Properties

Fluorinated Polybenzimidazole as a Novel Precursor for Carbon Molecular Sieve Membranes with Enhanced Gas Separation Properties

The Development of Carbon Membrane for Gas Separation: A Review

Nanoarchitectonics of carbon molecular sieve membranes with graphene oxide and polyimide for hydrogen purification

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