Highly permeable zeolitic imidazolate framework (ZIF)-71 nano-particles enhanced polyimide membranes for gas separation

Susilo Japip; Huan Wang; Youchang Xiao; Tai Shung Chung

doi:10.1016/j.memsci.2014.05.025

Highly permeable zeolitic imidazolate framework (ZIF)-71 nano-particles enhanced polyimide membranes for gas separation

Susilo Japip, Huan Wang, Youchang Xiao, Tai Shung Chung^*

^*Corresponding author for this work

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

243 Scopus citations

Abstract

Zeolitic imidazolate framework (ZIF)-71 nano-particles have been demonstrated as potential inorganic fillers for fabricating high-performance membranes for gas separation. The newly synthesized ZIF-71 nano-particles with a particle size of less than 100nm were compatibly incorporated in 6FDA-Durene polyimide membranes as novel mixed matrix membranes (MMMs). No obvious agglomeration between ZIF-71 nano-particles and the 6FDA-Durene matrix was observed. The effect of ZIF-71 loading on gas separation performance was investigated for H₂, O₂, N₂, CO₂, CH₄, C₂H₄, C₂H₆, C₃H₆ and C₃H₈. The incorporation of ZIF-71 nano-particles improves both gas permeation properties and membrane resistance against plasticization. With a 20wt% ZIF-71 addition, the pure CO₂ permeability of the MMM is increased by 3-fold, while the ideal CO₂/CH₄ selectivity is reduced from 16.4 to 12.8. In addition, the CO₂ plasticization pressure is increased from 16atm to 30atm. The MMM embedded with 20wt% ZIF-71 also displays a remarkable enhancement of C₃H₆ permeability from 57.6 Barrer to 371 Barrer without significantly compromising the ideal C₃H₆/C₃H₈ selectivity. The Positron Annihilation Lifetime Spectroscopy (PALS) and gas sorption characteristics further indicate that the permeability improvement is mainly due to the enhanced diffusivity and the molecular sieving effect of ZIF-71 nano-particles for separating C₃H₆/C₃H₈.

Original language	English (US)
Pages (from-to)	162-174
Number of pages	13
Journal	Journal of Membrane Science
Volume	467
DOIs	https://doi.org/10.1016/j.memsci.2014.05.025
State	Published - Oct 1 2014

Bibliographical note

Funding Information:
The authors would like to express their gratitude to National Research Foundation (NRF), Prime Minister׳s Office, Singapore , for its financial support on the Competitive Research Program (CRP award number: NRF-CRP-5-2009-5 ) with project entitled “New Biotechnology for Processing Metropolitan Organic Wastes into Value-Added Products” ( NUS Grant number: R-279-000-311-281 ) and the National University of Singapore (NUS) under the project entitled "Membrane research for CO 2 capture" (Grant number: R-279-000-404-133) for funding this research. The authors would also like to thank Mr. Yu Pan Tang for his valuable inputs and assistance in this work.

Keywords

Gas separation
Mixed matrix membranes
Molecular sieving effect
Nano-sized ZIF-71
Zeolitic imidazolate frameworks

ASJC Scopus subject areas

Biochemistry
General Materials Science
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/j.memsci.2014.05.025

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title = "Highly permeable zeolitic imidazolate framework (ZIF)-71 nano-particles enhanced polyimide membranes for gas separation",

abstract = "Zeolitic imidazolate framework (ZIF)-71 nano-particles have been demonstrated as potential inorganic fillers for fabricating high-performance membranes for gas separation. The newly synthesized ZIF-71 nano-particles with a particle size of less than 100nm were compatibly incorporated in 6FDA-Durene polyimide membranes as novel mixed matrix membranes (MMMs). No obvious agglomeration between ZIF-71 nano-particles and the 6FDA-Durene matrix was observed. The effect of ZIF-71 loading on gas separation performance was investigated for H2, O2, N2, CO2, CH4, C2H4, C2H6, C3H6 and C3H8. The incorporation of ZIF-71 nano-particles improves both gas permeation properties and membrane resistance against plasticization. With a 20wt% ZIF-71 addition, the pure CO2 permeability of the MMM is increased by 3-fold, while the ideal CO2/CH4 selectivity is reduced from 16.4 to 12.8. In addition, the CO2 plasticization pressure is increased from 16atm to 30atm. The MMM embedded with 20wt% ZIF-71 also displays a remarkable enhancement of C3H6 permeability from 57.6 Barrer to 371 Barrer without significantly compromising the ideal C3H6/C3H8 selectivity. The Positron Annihilation Lifetime Spectroscopy (PALS) and gas sorption characteristics further indicate that the permeability improvement is mainly due to the enhanced diffusivity and the molecular sieving effect of ZIF-71 nano-particles for separating C3H6/C3H8.",

keywords = "Gas separation, Mixed matrix membranes, Molecular sieving effect, Nano-sized ZIF-71, Zeolitic imidazolate frameworks",

author = "Susilo Japip and Huan Wang and Youchang Xiao and Chung, {Tai Shung}",

note = "Funding Information: The authors would like to express their gratitude to National Research Foundation (NRF), Prime Minister׳s Office, Singapore , for its financial support on the Competitive Research Program (CRP award number: NRF-CRP-5-2009-5 ) with project entitled “New Biotechnology for Processing Metropolitan Organic Wastes into Value-Added Products” ( NUS Grant number: R-279-000-311-281 ) and the National University of Singapore (NUS) under the project entitled {"}Membrane research for CO 2 capture{"} (Grant number: R-279-000-404-133) for funding this research. The authors would also like to thank Mr. Yu Pan Tang for his valuable inputs and assistance in this work. ",

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doi = "10.1016/j.memsci.2014.05.025",

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AU - Japip, Susilo

AU - Wang, Huan

AU - Xiao, Youchang

AU - Chung, Tai Shung

N1 - Funding Information: The authors would like to express their gratitude to National Research Foundation (NRF), Prime Minister׳s Office, Singapore , for its financial support on the Competitive Research Program (CRP award number: NRF-CRP-5-2009-5 ) with project entitled “New Biotechnology for Processing Metropolitan Organic Wastes into Value-Added Products” ( NUS Grant number: R-279-000-311-281 ) and the National University of Singapore (NUS) under the project entitled "Membrane research for CO 2 capture" (Grant number: R-279-000-404-133) for funding this research. The authors would also like to thank Mr. Yu Pan Tang for his valuable inputs and assistance in this work.

PY - 2014/10/1

Y1 - 2014/10/1

N2 - Zeolitic imidazolate framework (ZIF)-71 nano-particles have been demonstrated as potential inorganic fillers for fabricating high-performance membranes for gas separation. The newly synthesized ZIF-71 nano-particles with a particle size of less than 100nm were compatibly incorporated in 6FDA-Durene polyimide membranes as novel mixed matrix membranes (MMMs). No obvious agglomeration between ZIF-71 nano-particles and the 6FDA-Durene matrix was observed. The effect of ZIF-71 loading on gas separation performance was investigated for H2, O2, N2, CO2, CH4, C2H4, C2H6, C3H6 and C3H8. The incorporation of ZIF-71 nano-particles improves both gas permeation properties and membrane resistance against plasticization. With a 20wt% ZIF-71 addition, the pure CO2 permeability of the MMM is increased by 3-fold, while the ideal CO2/CH4 selectivity is reduced from 16.4 to 12.8. In addition, the CO2 plasticization pressure is increased from 16atm to 30atm. The MMM embedded with 20wt% ZIF-71 also displays a remarkable enhancement of C3H6 permeability from 57.6 Barrer to 371 Barrer without significantly compromising the ideal C3H6/C3H8 selectivity. The Positron Annihilation Lifetime Spectroscopy (PALS) and gas sorption characteristics further indicate that the permeability improvement is mainly due to the enhanced diffusivity and the molecular sieving effect of ZIF-71 nano-particles for separating C3H6/C3H8.

AB - Zeolitic imidazolate framework (ZIF)-71 nano-particles have been demonstrated as potential inorganic fillers for fabricating high-performance membranes for gas separation. The newly synthesized ZIF-71 nano-particles with a particle size of less than 100nm were compatibly incorporated in 6FDA-Durene polyimide membranes as novel mixed matrix membranes (MMMs). No obvious agglomeration between ZIF-71 nano-particles and the 6FDA-Durene matrix was observed. The effect of ZIF-71 loading on gas separation performance was investigated for H2, O2, N2, CO2, CH4, C2H4, C2H6, C3H6 and C3H8. The incorporation of ZIF-71 nano-particles improves both gas permeation properties and membrane resistance against plasticization. With a 20wt% ZIF-71 addition, the pure CO2 permeability of the MMM is increased by 3-fold, while the ideal CO2/CH4 selectivity is reduced from 16.4 to 12.8. In addition, the CO2 plasticization pressure is increased from 16atm to 30atm. The MMM embedded with 20wt% ZIF-71 also displays a remarkable enhancement of C3H6 permeability from 57.6 Barrer to 371 Barrer without significantly compromising the ideal C3H6/C3H8 selectivity. The Positron Annihilation Lifetime Spectroscopy (PALS) and gas sorption characteristics further indicate that the permeability improvement is mainly due to the enhanced diffusivity and the molecular sieving effect of ZIF-71 nano-particles for separating C3H6/C3H8.

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KW - Mixed matrix membranes

KW - Molecular sieving effect

KW - Nano-sized ZIF-71

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M3 - Article

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SN - 0376-7388

VL - 467

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JF - Journal of Membrane Science

ER -

Highly permeable zeolitic imidazolate framework (ZIF)-71 nano-particles enhanced polyimide membranes for gas separation

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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