Hydrophilic pore-blocked metal-organic frameworks: a simple route to a highly selective CH4/N-2 separation
The separation of gas mixtures with similar thermodynamic and transport properties is a challenging issue. For that, various types of adsorbents and membranes have been introduced. To date, solving this difficult problem remains an urgent core task in the energy and environment fields. Herein, we in...
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ROYAL SOC CHEMISTRY
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Online Access: | http://hdl.handle.net/10203/194459 https://doi.org/10.1039/c4ra12967a |
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ftkoasas:oai:koasas.kaist.ac.kr:10203/194459 2023-05-15T17:11:58+02:00 Hydrophilic pore-blocked metal-organic frameworks: a simple route to a highly selective CH4/N-2 separation Kim, DO Kim, Dae-Ok Lee, H Lee, Huen 201501 http://hdl.handle.net/10203/194459 https://doi.org/10.1039/c4ra12967a ENG eng ROYAL SOC CHEMISTRY ARTICLE A 2015 ftkoasas https://doi.org/10.1039/c4ra12967a 2015-06-25T23:57:53Z The separation of gas mixtures with similar thermodynamic and transport properties is a challenging issue. For that, various types of adsorbents and membranes have been introduced. To date, solving this difficult problem remains an urgent core task in the energy and environment fields. Herein, we introduce a simple method to achieve highly selective separation of CH4/N-2. To demonstrate our concept, a CH4/N-2 mixture was separated by Cu3BTC2 filled with water, with the water blocking the hydrophilic pore to reject the inclusion of gas molecules having weak affinity for water, and with the empty hydrophobic pores acting as gas storage sites. This led to high equilibrium selectivity of the CH4/N-2 mixture, at 24.7, which is 6 times higher than the untreated Cu3BTC2 itself. Moreover, the formation of methane hydrate in the mesopore of MOF was observed. Article in Journal/Newspaper Methane hydrate Korea Advanced Institute of Science and Technology: KOASAS - KAIST Open Access Self-Archiving System RSC Advances 5 4 2749 2755 |
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Open Polar |
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Korea Advanced Institute of Science and Technology: KOASAS - KAIST Open Access Self-Archiving System |
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ftkoasas |
language |
English |
description |
The separation of gas mixtures with similar thermodynamic and transport properties is a challenging issue. For that, various types of adsorbents and membranes have been introduced. To date, solving this difficult problem remains an urgent core task in the energy and environment fields. Herein, we introduce a simple method to achieve highly selective separation of CH4/N-2. To demonstrate our concept, a CH4/N-2 mixture was separated by Cu3BTC2 filled with water, with the water blocking the hydrophilic pore to reject the inclusion of gas molecules having weak affinity for water, and with the empty hydrophobic pores acting as gas storage sites. This led to high equilibrium selectivity of the CH4/N-2 mixture, at 24.7, which is 6 times higher than the untreated Cu3BTC2 itself. Moreover, the formation of methane hydrate in the mesopore of MOF was observed. |
format |
Article in Journal/Newspaper |
author |
Kim, DO Kim, Dae-Ok Lee, H Lee, Huen |
spellingShingle |
Kim, DO Kim, Dae-Ok Lee, H Lee, Huen Hydrophilic pore-blocked metal-organic frameworks: a simple route to a highly selective CH4/N-2 separation |
author_facet |
Kim, DO Kim, Dae-Ok Lee, H Lee, Huen |
author_sort |
Kim, DO Kim, Dae-Ok |
title |
Hydrophilic pore-blocked metal-organic frameworks: a simple route to a highly selective CH4/N-2 separation |
title_short |
Hydrophilic pore-blocked metal-organic frameworks: a simple route to a highly selective CH4/N-2 separation |
title_full |
Hydrophilic pore-blocked metal-organic frameworks: a simple route to a highly selective CH4/N-2 separation |
title_fullStr |
Hydrophilic pore-blocked metal-organic frameworks: a simple route to a highly selective CH4/N-2 separation |
title_full_unstemmed |
Hydrophilic pore-blocked metal-organic frameworks: a simple route to a highly selective CH4/N-2 separation |
title_sort |
hydrophilic pore-blocked metal-organic frameworks: a simple route to a highly selective ch4/n-2 separation |
publisher |
ROYAL SOC CHEMISTRY |
publishDate |
2015 |
url |
http://hdl.handle.net/10203/194459 https://doi.org/10.1039/c4ra12967a |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_doi |
https://doi.org/10.1039/c4ra12967a |
container_title |
RSC Advances |
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5 |
container_issue |
4 |
container_start_page |
2749 |
op_container_end_page |
2755 |
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1766068719166947328 |