Balancing uptake and selectivity in a copper-based metal–organic framework for xenon and krypton separation

• MOF-11 breaks the trade-off between uptake and selectivity for Xe/Kr separation. has highest Xe of 4.05 mmol/g at 0.2 bar 298 K. high Henry IAST 13.6 16.1 separation is achieved by synergy optimal pore size OMSs. Efficient Xenon (Xe) krypton (Kr) important in gas industries but remains challenging. Adsorptive affords an energy-efficient method to isolate two noble gases, yet developing selective adsorbents with excellent difficult, limited a selectivity. We report accessible open metal sites (OMSs) over Kr via discriminable difference van der Waals interactions. new benchmark uptakes 4.95 (at 1 bar), (13.6 16.1) Evidenced Xe-loaded structure, multiple Xe···H interactions terminal H atoms allow firmly packed within framework. This work demonstrates strategy balancing capitalizing on