Enhanced Gas Uptake in a Microporous Metal-Organic Framework <i>via</i> a Sorbate Induced-Fit Mechanism.

ABSTRACT: Physical adsorption of gas molecules in microporous materials is an exothermic process, with desorption entropy driving a decrease in uptake with temperature. Enhanced gas sorption with increasing temperature is rare in porous materials and is indicative of sorbate initiated structural change. Here, sorption of C₂H₆, C₃H₆, and C₃H₈ in a flexible microporous metal-organic framework (MOF) {Cu(FPBDC)]·DMF}_n (NKU-FlexMOF-1) (H₂FPBDC = 5-(5-fluoropyridin-3-yl)-1,3-benzenedicarboxylic acid) that increases with rising temperature over a practically useful temperature and pressure range is reported along with other small molecule and hydrocarbon sorption isotherms. Single X-ray diffraction studies

SUBMITTER: Yu MH 

PROVIDER: S-EPMC7927981 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature