Construction of Multiple Nonpolar SF₆ Nano‐Traps by Highly Stable Pyrazole‐Based MOFs for SF₆ Recovery

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract Sulfur hexafluoride (SF 6 ), widely used in electric power systems, is one of the most potent greenhouse gases. Efficient separation SF /N 2 by adsorptive technology based on porous materials great significance industry yet remains a daunting challenge. Herein, novel strategy introduced to construct unique pore channels with multiple nano‐traps precisely selecting bipyrazole ligands design nonpolar surface microporous metal−organic frameworks (MOFs), which significantly enhances material's affinity for . A series ultra‐stable bipyrazole‐based MOFs, M(BPZ) (M═Co, Ni, Zn), are synthesized and investigated. Among these three materials, Co(BPZ) Zn(BPZ) show excellent uptakes 2.47 2.39 mmol g −1 at 298 K 0.1 bar while exhibits highest (10/90, v/v) IAST selectivity 748. Breakthrough experiments reveal that mixtures can be efficiently separated high (≥99.5 %) productivity 46.1 L kg Theoretical calculations suggest preferably adsorbs through S−F··· π (pyrazole rings) van der Waals interactions. This work provides straightforward approach exploring adsorbents efficient separation.

Language: Английский

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Engineering nano-trap distribution in metal-organic frameworks enables boost of SF6/N2 separation

Green Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Molecular Mechanism Behind the Capture of Fluorinated Gases by Metal–Organic Frameworks

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Jan. 27, 2025

Abstract Fluorinated gases (F-gases) play a vital role in the chemical industry and fields of air conditioning, refrigeration, health care, organic synthesis. However, direct emission waste containing F-gases into atmosphere contributes to greenhouse effects generates toxic substances. Developing porous materials for energy-efficient capture, separation, recovery is highly desired. Recently, as designable adsorbents, metal–organic frameworks (MOFs) exhibit excellent selective sorption performance toward F-gases, especially recognition separation different with similar properties, showing their great potential control recovery. In this review, we discuss capture azeotropic, near-azeotropic, isomeric mixtures various application scenarios by MOFs, specifically classify analyze molecular interaction between interpret mechanisms underlying high regarding both adsorption capacity selectivity, providing repertoire future design. Challenges faced transformation research roadmap MOFs adsorbent technologies are also discussed, areas endeavors highlighted.

Language: Английский

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Separation of xylene isomers using metal-organic frameworks: Addressing challenges in the petrochemical industry

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 523, P. 216229 - 216229

Published: Oct. 11, 2024

Language: Английский

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Metal pyrazolate frameworks: crystal engineering access to stable functional materials

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

As the focus evolves from structure discovery/characterization (what it is) to property/performance exploration is for), pursuit of stable functional metal-organic frameworks (MOFs) has been ongoing in terms both fundamental research and industrial implementation. Under guidance crystal engineering principles, a plethora developed pyrazolate MOFs (metal pyrazaolate frameworks, MPFs) featuring strong coordination M-N bonding. This attribution helps them retain their structures functions under alkaline conditions required for practical use. Based on poly-topic ligands, various classic MOFs, such as Co(bdp), Fe2(BDP)3, Ni8L6, PCN-601, BUT-55, name few, have revealed fascinating architectures, intriguing properties, record-breaking performances applications during past decade. review will present full scope MPFs date: (1) superiority significance constructing through approach, (2) synthetic strategies adopted building and/or modifying MPFs, (3) structural features stability MPF community, (4) potential energy environmental related fields. The future opportunities are also discussed designing next-generation smart materials. Overall, this attempts provide insights guidelines customization pyrazolate-based specific purposes, which would promote development porous materials addressing societal challenges.

Language: Английский

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Topology-Oriented Assembly of Iron-2,5-Furandicarboxylate Coordination Cubes for Highly Selective CO₂/SF₆/N₂ Capture

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

As typical greenhouse gases, selective capture of CO2 (carbon dioxide) and SF6 (sulfur hexafluoride) is great importance. Herein, on the basis a six-connected pcu topology, three isomorphic Fe-2,5-furandicarboxylate (Fe-FDC) metal–organic framework (MOF) adsorbents (SNNU-133–135) were successfully prepared via rational assembly {[Fe3O]8(FDC)12} cubic building blocks. With dihedral angles in Fe-FDC cubes varying from 80° (SNNU-133), 87° (SNNU-134), to 90°(SNNU-135), MOF isomers show step-by-step enhancement performance. For SNNU-135, at 298 K 1 bar, adsorption capacities for are 83.6 66.7 cm3/g, CO2/N2 SF6/N2 selectivity values up 29.4 509.1, respectively. Furthermore, practical breakthrough interval time SNNU-135 can reach 75 185 min g–1 (298 K, mL min–1, = 15:85 10:90) with captured amounts 1.24 2.34 mmol/g, purity greater than 99.9%. The most regular cubes, all available Fe-OMSs together multiple weak interactions, cause have highest capacity, best performance, one-step separation ability CO2/SF6/N2 ternary mixtures.

Language: Английский

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Efficient SF₆ Separation from a SF₆/N₂ Gas Mixture Based on Terephthalate Metal–Organic Framework MIL-53(Al)

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Language: Английский

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A stable Al-MOF based on pore size control strategy for efficient SF6/N2 separation

Microporous and Mesoporous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 113622 - 113622

Published: April 1, 2025

Language: Английский

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Purification of Xe and SF₆ through Adaptive Contractions in a Flexible Metal–Organic Framework

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Overcoming the trade-off effects between adsorption capacity, selectivity, and enthalpy of an adsorbent is very important but remains a huge challenge. Here, we report flexible metal-organic framework (FJI-H36); it can selectively adsorb Xe from Xe/Kr mixtures with high capacity low enthalpy. Structural analyses show that such excellent performances come adaptive contraction framework; pore shrinkage enhance interactions adsorbed offset some heats. For SF6/N2 mixtures, FJI-H36 also performance SF6 through contraction, resulting in both selectivity This not only provides new for purification Xe/Kr/SF6 offers potential solution to overcome trade-offs among specific adsorbent.

Language: Английский

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Dichloromethane-knitting synthesis of fluorinated porous organic polymers for superior sulfur hexafluoride adsorption and separation

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 133024 - 133024

Published: April 1, 2025

Language: Английский

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