Strengthening Intraframework Interaction within Flexible MOFs Demonstrates Simultaneous Sieving Acetylene from Ethylene and Carbon Dioxide.

ABSTRACT: Efficient separation of acetylene (C₂ H₂ )/ethylene (C₂ H₄ ) and acetylene/carbon dioxide (CO₂ ) by adsorption is an industrially promising process, but adsorbents capable of simultaneously capturing trace acetylene from ethylene and carbon dioxide are scarce. Herein, a gate-opening effect on three isomorphous flexible metal-organic frameworks (MOFs) named Co(4-DPDS)₂ MO₄ (M = Cr, Mo, W; 4-DPDS = 4,4-dipyridyldisulfide) is modulated by anion pillars substitution. The shortest CrO₄ ^2- strengthens intraframework hydrogen bonding and thus blocks structural transformation after activation, striking a good balance among working capacity, separation selectivity, and trace impurity removal of flexib

SUBMITTER: Zheng F 

PROVIDER: S-EPMC10037686 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature