Combining In Situ Techniques (XRD, IR, and ¹³C NMR) and Gas Adsorption Measurements Reveals CO₂-Induced Structural Transitions and High CO₂/CH₄ Selectivity for a Flexible Metal-Organic Framework JUK-8.

ABSTRACT: Flexible metal-organic frameworks (MOFs) are promising materials in gas-related technologies. Adjusting the material to processes requires understanding of the flexibility mechanism and its influence on the adsorption properties. Herein, we present the mechanistic understanding of CO₂-induced pore-opening transitions of the water-stable MOF JUK-8 ([Zn(oba)(pip)]_n, oba^2- = 4,4'-oxybis(benzenedicarboxylate), pip = 4-pyridyl-functionalized benzene-1,3-dicarbohydrazide) as well as its potential applicability in gas purification. Detailed insights into the global structural transformation and subtle local MOF-adsorbate interactions are obtained by three in situ techniques (XRD, IR, and ¹³CO₂-NMR). These results are furt

SUBMITTER: Roztocki K 

PROVIDER: S-EPMC8289234 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature