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Lah, Myoung Soo
Frontier Energy Storage Material Lab.
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Zirconium-Formate Macrocycles and Supercage: Molecular Packing versus MOF-like Network for Water Vapor Sorption

Author(s)
Choi, Jong InChun, HyungphilLah, Myoung Soo
Issued Date
2018-08
DOI
10.1021/jacs.8b06757
URI
https://scholarworks.unist.ac.kr/handle/201301/25009
Fulltext
https://pubs.acs.org/doi/10.1021/jacs.8b06757
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.140, no.34, pp.10915 - 10920
Abstract
In systematic efforts toward a new type of molecule-based porous materials, facile and efficient synthetic methods have been established to obtain macrocyclic [Zr-6](6) and supercage-like {[Zr-6](6)}(8), where [Zr-6] represents [Zr6O4(OH)(4)(CO2)] building unit commonly found in Zr-based metal organic frameworks. The reactions involve in situ hydrolysis of DMF solvent to produce formate linkers and thus do not require any organic ligand. A minor variation in the composition of two cyclic hexamers thus obtained results in dramatic differences in crystal packing which in turn lead to distinctive and selective sorption behavior for water vapor. It is shown that the high heat of water adsorption and unrestricted uptake under high humidity are consequences of the highly polar surface and flexible crystal packing. The reversibility of water adsorption is demonstrated by cyclic measurements of uptake and regeneration under dynamic flow conditions
Publisher
AMER CHEMICAL SOC
ISSN
0002-7863
Keyword
METAL-ORGANIC FRAMEWORKSCARBON-DIOXIDESURFACE-AREASTABILITYCLUSTERSSTORAGEADSORPTIONCHEMISTRYCRYSTALSCAPTURE

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