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CO(2)/N(2) Gas Separation Using Pebax/ZIF-7—PSf Composite Membranes

In this study, we mixed the zeolitic imidazolate framework-7 (ZIF-7) with poly(ether-b-amide)(®) 2533 (Pebax-2533) and used it as a selective layer for a composite membrane. We prepared the composite membrane’s substrate using polysulfone (PSf), adjusted its pore size using polyethylene glycol (PEG)...

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Autores principales: Yoon, Soong-Seok, Lee, Hyun-Kyung, Hong, Se-Ryeong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8466813/
https://www.ncbi.nlm.nih.gov/pubmed/34564525
http://dx.doi.org/10.3390/membranes11090708
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author Yoon, Soong-Seok
Lee, Hyun-Kyung
Hong, Se-Ryeong
author_facet Yoon, Soong-Seok
Lee, Hyun-Kyung
Hong, Se-Ryeong
author_sort Yoon, Soong-Seok
collection PubMed
description In this study, we mixed the zeolitic imidazolate framework-7 (ZIF-7) with poly(ether-b-amide)(®) 2533 (Pebax-2533) and used it as a selective layer for a composite membrane. We prepared the composite membrane’s substrate using polysulfone (PSf), adjusted its pore size using polyethylene glycol (PEG), and applied polydimethylsiloxane (PDMS) to the gutter layer and the coating layer. Then, we investigated the membrane’s properties of gases by penetrating a single gas (N(2), CO(2)) into the membrane. We identified the peaks and geometry of ZIF-7 to determine if it had been successfully synthesized. We confirmed that ZIF-7 had a BET surface area of 303 m(2)/g, a significantly high Langmuir surface area of 511 m(2)/g, and a high CO(2)/N(2) adsorption selectivity of approximately 50. Considering the gas permeation, with ZIF-7 mixed into Pebax-2533, N(2) permeation decreased from 2.68 GPU in a pure membrane to 0.43 GPU in the membrane with ZIF-7 25 wt%. CO(2) permeation increased from 18.43 GPU in the pure membrane to 26.22 GPU in the ZIF-7 35 wt%. The CO(2)/N(2) ideal selectivity increased from 6.88 in the pure membrane to 50.43 in the ZIF-7 25 wt%. Among the membranes, Pebax-2533/ZIF-7 25 wt% showed the highest permeation properties and the characteristics of CO(2)-friendly ZIF-7.
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spelling pubmed-84668132021-09-27 CO(2)/N(2) Gas Separation Using Pebax/ZIF-7—PSf Composite Membranes Yoon, Soong-Seok Lee, Hyun-Kyung Hong, Se-Ryeong Membranes (Basel) Article In this study, we mixed the zeolitic imidazolate framework-7 (ZIF-7) with poly(ether-b-amide)(®) 2533 (Pebax-2533) and used it as a selective layer for a composite membrane. We prepared the composite membrane’s substrate using polysulfone (PSf), adjusted its pore size using polyethylene glycol (PEG), and applied polydimethylsiloxane (PDMS) to the gutter layer and the coating layer. Then, we investigated the membrane’s properties of gases by penetrating a single gas (N(2), CO(2)) into the membrane. We identified the peaks and geometry of ZIF-7 to determine if it had been successfully synthesized. We confirmed that ZIF-7 had a BET surface area of 303 m(2)/g, a significantly high Langmuir surface area of 511 m(2)/g, and a high CO(2)/N(2) adsorption selectivity of approximately 50. Considering the gas permeation, with ZIF-7 mixed into Pebax-2533, N(2) permeation decreased from 2.68 GPU in a pure membrane to 0.43 GPU in the membrane with ZIF-7 25 wt%. CO(2) permeation increased from 18.43 GPU in the pure membrane to 26.22 GPU in the ZIF-7 35 wt%. The CO(2)/N(2) ideal selectivity increased from 6.88 in the pure membrane to 50.43 in the ZIF-7 25 wt%. Among the membranes, Pebax-2533/ZIF-7 25 wt% showed the highest permeation properties and the characteristics of CO(2)-friendly ZIF-7. MDPI 2021-09-14 /pmc/articles/PMC8466813/ /pubmed/34564525 http://dx.doi.org/10.3390/membranes11090708 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yoon, Soong-Seok
Lee, Hyun-Kyung
Hong, Se-Ryeong
CO(2)/N(2) Gas Separation Using Pebax/ZIF-7—PSf Composite Membranes
title CO(2)/N(2) Gas Separation Using Pebax/ZIF-7—PSf Composite Membranes
title_full CO(2)/N(2) Gas Separation Using Pebax/ZIF-7—PSf Composite Membranes
title_fullStr CO(2)/N(2) Gas Separation Using Pebax/ZIF-7—PSf Composite Membranes
title_full_unstemmed CO(2)/N(2) Gas Separation Using Pebax/ZIF-7—PSf Composite Membranes
title_short CO(2)/N(2) Gas Separation Using Pebax/ZIF-7—PSf Composite Membranes
title_sort co(2)/n(2) gas separation using pebax/zif-7—psf composite membranes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8466813/
https://www.ncbi.nlm.nih.gov/pubmed/34564525
http://dx.doi.org/10.3390/membranes11090708
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