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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202100866
|2 doi
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|a pubmed24n1096.xml
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|a DE-627
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|a eng
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|a Zhang, Feifei
|e verfasserin
|4 aut
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|a Construction of a Porous Metal-Organic Framework with a High Density of Open Cr Sites for Record N2 /O2 Separation
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 15.09.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a The removal of low concentration N2 is of great significance and challenging in the industrial production of high-purity O2 . Herein, a chromium-based metal-organic framework, namely, TYUT-96Cr, is reported, which has an unprecedented N2 capture capacity of 37.46 cm3 cm-3 and N2 /O2 (5:95, v/v) selectivity up to 26.95 (298 K and 1 bar), thus setting new benchmarks for all reported metal-organic frameworks and commercially used ones (Li-LSX and 13X). Breakthrough experiments reveal that N2 can be directly extracted from various N2 /O2 (79:21, 50:50, 5:95, and 1:99, v/v) mixtures by this material, affording a record-high O2 -production scale with 99.99% purity. Density functional theory calculations and in situ infrared spectroscopy studies demonstrate that the high-density open Cr (III) sites in TYUT-96Cr can behave as effective Lewis acidic sites, thus resulting in a strong affinity toward N2 . The high N2 adsorption selectivity, exceptional separation performance, and ultrahigh structural stability render this porous material with great potential for this important industrial application
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|a Journal Article
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|a Lewis acid sites
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|a N2/O2 separation
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|a high-purity O2
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|a metal-organic frameworks
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|a open Cr sites
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|a Shang, Hua
|e verfasserin
|4 aut
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1 |
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|a Wang, Li
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Yong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Jiangfeng
|e verfasserin
|4 aut
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1 |
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|a Xia, Yuanhua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Hao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Libo
|e verfasserin
|4 aut
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| 700 |
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|a Li, Jinping
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 37 vom: 06. Sept., Seite e2100866
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:33
|g year:2021
|g number:37
|g day:06
|g month:09
|g pages:e2100866
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|u http://dx.doi.org/10.1002/adma.202100866
|3 Volltext
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