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Demonstrates enhanced xenon selectivity over krypton in hydrogen-bonded frameworks, implying advanced separation techniques.
Xe (>99.9%) can be directly obtained. The dynamic selectivity calculated from desorption process is as high as 16.5, which exceeds all the reported porous organic materials. Gas-loaded crystal data combined with molecular modeling clearly reveal that the size-matched pores within HOF-TBPDM induce a stronger polarization effect on Xe than Kr, leading to preferential binding of Xe molecules. Overall, this study demonstrates the effectiveness of 2D pore in HOFs for balancing thermodynamic adsorption and kinetic diffusion, providing a viable strategy for advanced Xe/Kr separation.
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Ji et al. (2026) studied this question.
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