Mobile Constituent-Boosted Dynamic Separation of C2H2/C2H4/CO2 Ternary Mixtures in Metal–Organic Frameworks DOI
Qixing Liu, Junyu Ren, Zhaoqiang Zhang

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

The separation of acetylene (C2H2), ethylene (C2H4), and carbon dioxide (CO2) is critical in the chemical industry, driven by increasing demand for high-purity C2H2 C2H4. While metal-organic frameworks (MOFs) offer an energy-efficient approach adsorptive gas separation, achieving sub-angstrom precision pore size adjustment remains challenging. In this work, we leverage two synergistic mechanisms a double-interpenetrated framework: (1) global structural flexibility, arising from dynamic displacement subnetworks to tailor dimensions, (2) local enabled counterion ligand rotation, modulate aperture binding affinity precise molecular discrimination. A series isostructural MOFs, NUS-33-CF3SO3 NUS-34-BF4, were designed enable one-step purification C2H4 concurrent recovery ternary mixtures. Within pores optimal interplay between counterion-mediated host-guest interactions framework adaptability enables simultaneous regulation static kinetic adsorption properties. Notably, NUS-34-BF4 achieves productivity 2.62 mmol/g uptake 1.26 mmol/g. This study highlights pivotal yet underexplored role counterions as gatekeepers, offering tunable strategy engineer environments flexible MOFs advanced separations.

Язык: Английский

Mobile Constituent-Boosted Dynamic Separation of C2H2/C2H4/CO2 Ternary Mixtures in Metal–Organic Frameworks DOI
Qixing Liu, Junyu Ren, Zhaoqiang Zhang

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

The separation of acetylene (C2H2), ethylene (C2H4), and carbon dioxide (CO2) is critical in the chemical industry, driven by increasing demand for high-purity C2H2 C2H4. While metal-organic frameworks (MOFs) offer an energy-efficient approach adsorptive gas separation, achieving sub-angstrom precision pore size adjustment remains challenging. In this work, we leverage two synergistic mechanisms a double-interpenetrated framework: (1) global structural flexibility, arising from dynamic displacement subnetworks to tailor dimensions, (2) local enabled counterion ligand rotation, modulate aperture binding affinity precise molecular discrimination. A series isostructural MOFs, NUS-33-CF3SO3 NUS-34-BF4, were designed enable one-step purification C2H4 concurrent recovery ternary mixtures. Within pores optimal interplay between counterion-mediated host-guest interactions framework adaptability enables simultaneous regulation static kinetic adsorption properties. Notably, NUS-34-BF4 achieves productivity 2.62 mmol/g uptake 1.26 mmol/g. This study highlights pivotal yet underexplored role counterions as gatekeepers, offering tunable strategy engineer environments flexible MOFs advanced separations.

Язык: Английский

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