Thermally Tunable Adsorption of Xenon in Crystalline Molecular Sorbent.

ABSTRACT: The thermostability of encapsulated xenon is investigated in a series of isostructural crystalline sorbents. These sorbents consist of metal-organic capsules, with the general formula of [Co_nFe_4-nL₆]^4- (n = 1, 2, 3 and 4), where L^2- is an organic linker with two sulfonate groups. In the crystalline sorbent, guanidinium cations form H-bond networks with the peripheral sulfonate groups in the solid state and trap xenon in the molecular cavities, which are at least 2.7 times the volume of xenon. When heated, the sorbent retains xenon up to 561 K, i.e., 396 K higher than the boiling point of xenon. Furthermore, the thermostability of trapped xenon can be modulated by varying the ratio of Co:Fe in the crystalline sorbent. Elemental analysis

SUBMITTER: Du K 

PROVIDER: S-EPMC11257604 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature