Tuning the interplay between selectivity and permeability of ZIF-7 mixed matrix membranes

Bassem A. Al-Maythalony; Ahmed M. Alloush; Muhammed Faizan; Hatim Dafallah; Mohammed A.A. Elgzoly; Adam A.A. Seliman; Amir Al-Ahmed; Zain H. Yamani; Mohamed A.M. Habib; Kyle E. Cordova; Omar M. Yaghi

doi:10.1021/acsami.6b15803

Tuning the interplay between selectivity and permeability of ZIF-7 mixed matrix membranes

Bassem A. Al-Maythalony
, Ahmed M. Alloush
, Muhammed Faizan
, Hatim Dafallah
, Mohammed A.A. Elgzoly
, Adam A.A. Seliman
, Amir Al-Ahmed
, Zain H. Yamani
, Mohamed A.M. Habib
, Kyle E. Cordova
, Omar M. Yaghi^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

92 Scopus citations

Abstract

Nanoparticles of zeolitic imidazolate framework- 7 (nZIF-7) were blended with poly(ether imide) (PEI) to fabricate a new mixed-matrix membrane (nZIF-7/PEI). nZIF-7 was chosen in order to demonstrate the power of postsynthetic modification (PSM) by linker exchange of benzimidazolate to benzotriazolate for tuning the permeability and selectivity properties of a resulting membrane (PSM-nZIF- 7/PEI). These two new membranes were subjected to constant volume, variable pressure gas permeation measurements (H₂, N₂, O₂, CH₄, CO₂, C₂H₆, and C₃H₈), in which unique gas separation behavior was observed when compared to the pure PEI membrane. Specifically, the nZIF-7/PEI membrane exhibited the highest selectivities for CO₂/CH₄, CO₂/C₂H₆, and CO₂/C₃H₈ gas pairs. Furthermore, PSM-nZIF-7/PEI membrane displayed the highest permeabilities, which resulted in H₂/CH₄, N₂/CH₂₄, and H₂/CO₂ permselectivities that are remarkably well-positioned on the Robeson upper bound curves, thus, indicating its potential applicability for use in practical gas purifications.

Original language	English
Pages (from-to)	33401-33407
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	39
DOIs	https://doi.org/10.1021/acsami.6b15803
State	Published - 4 Oct 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Keywords

Gas separation
Metal-organic frameworks
Mixed-matrix membranes
Nanomaterials
Zeolitic imidazolate frameworks

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.6b15803

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Al-Maythalony, B. A., Alloush, A. M., Faizan, M., Dafallah, H., Elgzoly, M. A. A., Seliman, A. A. A., Al-Ahmed, A., Yamani, Z. H., Habib, M. A. M., Cordova, K. E., & Yaghi, O. M. (2017). Tuning the interplay between selectivity and permeability of ZIF-7 mixed matrix membranes. ACS Applied Materials and Interfaces, 9(39), 33401-33407. https://doi.org/10.1021/acsami.6b15803

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title = "Tuning the interplay between selectivity and permeability of ZIF-7 mixed matrix membranes",

abstract = "Nanoparticles of zeolitic imidazolate framework- 7 (nZIF-7) were blended with poly(ether imide) (PEI) to fabricate a new mixed-matrix membrane (nZIF-7/PEI). nZIF-7 was chosen in order to demonstrate the power of postsynthetic modification (PSM) by linker exchange of benzimidazolate to benzotriazolate for tuning the permeability and selectivity properties of a resulting membrane (PSM-nZIF- 7/PEI). These two new membranes were subjected to constant volume, variable pressure gas permeation measurements (H2, N2, O2, CH4, CO2, C2H6, and C3H8), in which unique gas separation behavior was observed when compared to the pure PEI membrane. Specifically, the nZIF-7/PEI membrane exhibited the highest selectivities for CO2/CH4, CO2/C2H6, and CO2/C3H8 gas pairs. Furthermore, PSM-nZIF-7/PEI membrane displayed the highest permeabilities, which resulted in H2/CH4, N2/CH24, and H2/CO2 permselectivities that are remarkably well-positioned on the Robeson upper bound curves, thus, indicating its potential applicability for use in practical gas purifications.",

keywords = "Gas separation, Metal-organic frameworks, Mixed-matrix membranes, Nanomaterials, Zeolitic imidazolate frameworks",

author = "Al-Maythalony, \{Bassem A.\} and Alloush, \{Ahmed M.\} and Muhammed Faizan and Hatim Dafallah and Elgzoly, \{Mohammed A.A.\} and Seliman, \{Adam A.A.\} and Amir Al-Ahmed and Yamani, \{Zain H.\} and Habib, \{Mohamed A.M.\} and Cordova, \{Kyle E.\} and Yaghi, \{Omar M.\}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

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month = oct,

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doi = "10.1021/acsami.6b15803",

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AU - Al-Maythalony, Bassem A.

AU - Alloush, Ahmed M.

AU - Faizan, Muhammed

AU - Dafallah, Hatim

AU - Elgzoly, Mohammed A.A.

AU - Seliman, Adam A.A.

AU - Al-Ahmed, Amir

AU - Yamani, Zain H.

AU - Habib, Mohamed A.M.

AU - Cordova, Kyle E.

AU - Yaghi, Omar M.

PY - 2017/10/4

Y1 - 2017/10/4

N2 - Nanoparticles of zeolitic imidazolate framework- 7 (nZIF-7) were blended with poly(ether imide) (PEI) to fabricate a new mixed-matrix membrane (nZIF-7/PEI). nZIF-7 was chosen in order to demonstrate the power of postsynthetic modification (PSM) by linker exchange of benzimidazolate to benzotriazolate for tuning the permeability and selectivity properties of a resulting membrane (PSM-nZIF- 7/PEI). These two new membranes were subjected to constant volume, variable pressure gas permeation measurements (H2, N2, O2, CH4, CO2, C2H6, and C3H8), in which unique gas separation behavior was observed when compared to the pure PEI membrane. Specifically, the nZIF-7/PEI membrane exhibited the highest selectivities for CO2/CH4, CO2/C2H6, and CO2/C3H8 gas pairs. Furthermore, PSM-nZIF-7/PEI membrane displayed the highest permeabilities, which resulted in H2/CH4, N2/CH24, and H2/CO2 permselectivities that are remarkably well-positioned on the Robeson upper bound curves, thus, indicating its potential applicability for use in practical gas purifications.

AB - Nanoparticles of zeolitic imidazolate framework- 7 (nZIF-7) were blended with poly(ether imide) (PEI) to fabricate a new mixed-matrix membrane (nZIF-7/PEI). nZIF-7 was chosen in order to demonstrate the power of postsynthetic modification (PSM) by linker exchange of benzimidazolate to benzotriazolate for tuning the permeability and selectivity properties of a resulting membrane (PSM-nZIF- 7/PEI). These two new membranes were subjected to constant volume, variable pressure gas permeation measurements (H2, N2, O2, CH4, CO2, C2H6, and C3H8), in which unique gas separation behavior was observed when compared to the pure PEI membrane. Specifically, the nZIF-7/PEI membrane exhibited the highest selectivities for CO2/CH4, CO2/C2H6, and CO2/C3H8 gas pairs. Furthermore, PSM-nZIF-7/PEI membrane displayed the highest permeabilities, which resulted in H2/CH4, N2/CH24, and H2/CO2 permselectivities that are remarkably well-positioned on the Robeson upper bound curves, thus, indicating its potential applicability for use in practical gas purifications.

KW - Gas separation

KW - Metal-organic frameworks

KW - Mixed-matrix membranes

KW - Nanomaterials

KW - Zeolitic imidazolate frameworks

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SN - 1944-8244

VL - 9

SP - 33401

EP - 33407

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 39

ER -

Tuning the interplay between selectivity and permeability of ZIF-7 mixed matrix membranes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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