Metal–Organic Framework with Space-Partition Pores by Fluorinated Anions for Benchmark C₂H₂/CO₂ Separation

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(25), P. 17220 - 17229

Published: June 11, 2024

The efficient separation of C2H2 from C2H2/CO2 or C2H2/CO2/CH4 mixtures is crucial for achieving high-purity (>99%), essential in producing contemporary commodity chemicals. In this report, we present ZNU-12, a metal–organic framework with space-partitioned pores formed by inorganic fluorinated anions, highly and separation. framework, partitioned SiF62– anions into three distinct cages, enables both high capacity (176.5 cm3/g at 298 K 1.0 bar) outstanding selectivity over CO2 (13.4) CH4 (233.5) simultaneously. Notably, achieve record-high productivity (132.7, 105.9, 98.8, 80.0 L/kg 99.5% purity) (v/v = 50/50) 1/1/1, 1/1/2, 1/1/8) through cycle adsorption–desorption breakthrough experiments recovery rates. Theoretical calculations suggest the presence potent "2 + 2" collaborative hydrogen bonds between two hexafluorosilicate (SiF62–) confined cavities.

Language: Английский

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Recent advances on metal–organic frameworks for deep purification of olefins

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(10), P. 5563 - 5580

Published: Jan. 1, 2024

The efficient removal of trace impurities is significant for the production high-purity olefins. This review summarizes latest advancements in deep purification ethylene and propylene using MOF materials.

Language: Английский

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Multimodal Engineering of Catalytic Interfaces Confers Multi‐Site Metal‐Organic Framework for Internal Preconcentration and Accelerating Redox Kinetics in Lithium‐Sulfur Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(8)

Published: Jan. 5, 2024

Abstract The development of highly efficient catalysts to address the shuttle effect and sluggish redox kinetics lithium polysulfides (LiPSs) in lithium‐sulfur batteries (LSBs) remains a formidable challenge. In this study, series multi‐site catalytic metal‐organic frameworks (MSC‐MOFs) were elaborated through multimodal molecular engineering regulate both reactant diffusion catalysis processes. MSC‐MOFs crafted with nanocages featuring collaborative specific adsorption/catalytic interfaces formed by exposed mixed‐valence metal sites surrounding adsorption sites. This design facilitates internal preconcentration, coadsorption mechanism, continuous conversion toward concurrently. Leveraging these attributes, LSBs an MSC‐MOF‐Ti interlayer demonstrated 62 % improvement discharge capacity cycling stability. resulted achieving high areal (11.57 mAh cm −2 ) at sulfur loading (9.32 mg under lean electrolyte conditions, along pouch cell exhibiting ultra‐high gravimetric energy density 350.8 Wh kg −1 . Lastly, work introduces universal strategy for new class MOFs, promoting SRR suppressing level. findings shed light on advanced porous materials application high‐energy LSBs.

Language: Английский

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A novel hydrophobic carborane-hybrid microporous material for reversed C₂H₆ adsorption and efficient C₂H₄/C₂H₆ separation under humid conditions

Chemical Science, Journal Year: 2024, Volume and Issue: 15(15), P. 5653 - 5659

Published: Jan. 1, 2024

A novel hydrophobic carborane-hybrid microporous metal–organic framework ZNU-10 was prepared for reversed C 2 H 6 adsorption and efficient 4 /C separation under humid conditions.

Language: Английский

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A Highly Stable Anion-Functionalized Cage-like Framework for Efficient Separation of MTO Products under Harsh Conditions

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 837 - 844

Published: Feb. 3, 2025

Language: Английский

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Efficient C2H2/CO2 and C2H2/C2H4 separations in a novel fluorinated metal–organic framework

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 332, P. 125777 - 125777

Published: Nov. 21, 2023

Language: Английский

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Specific Propyne Trapping Sites within a Robust MOF for Efficient Propyne/Propadiene Separation with Record Propadiene Productivity

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Dec. 8, 2023

Abstract Separating propyne/propadiene to produce pure propadiene is extremely challenging in industry due their similar properties. Herein, a novel ZrF 6 2− anion pillared cage‐like metal‐organic framework (termed as CuZrF ‐TPA) for highly efficient separation reported. It exhibits high propyne capacity (177.4/188.6 cm 3 /cm at 0.5/1.0 bar and 298 K), benchmark selectivity (6.0), remarkable potential (5.7 mol L −1 ) simultaneously. Record productivity (≈4.7 achieved through single adsorption process breakthrough experiments with excellent recycle stability even under humid conditions. Based on the structure of propyne‐loaded crystals, two binding sites are identified, including major trapping site windows minor located large cages. Modelling studies further confirm that contracted cage surrounded rotating Lewis basic F atoms aromatic rings optimal bonding capture multiple hydrogen π···π interactions.

Language: Английский

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Efficient carbon dioxide capture from flue gas and natural gas by a robust metal–organic framework with record selectivity and excellent granulation performance

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 343, P. 127099 - 127099

Published: March 13, 2024

Language: Английский

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Ideal Cage‐like Pores for Molecular Sieving of Butane Isomers with High Purity and Record Productivity

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(27)

Published: April 18, 2024

n-C

Language: Английский

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Boosting Acetylene Packing Density within an Isoreticular Metal–Organic Framework for Efficient C₂H₂/CO₂ Separation

Chem & Bio Engineering, Journal Year: 2024, Volume and Issue: 1(3), P. 245 - 251

Published: Feb. 1, 2024

Porous solid adsorbents for C2H2/CO2 separation are generally confronted with poor stability, high cost, or regeneration energy, which largely inhibit their industrial implementation. A desired adsorbent material practical implementation should exhibit a good balance between low scale-up production feasibility, and performance. An effective strategy is herein explored based on reticular chemistry through embedding methyl groups in prototype microporous metal-organic framework (MOF) featuring cost stability to effectively separate an mixture. The anchored the pore surfaces could strongly boost C2H2 packing density specifically enhance performance, as distinctly established by single-component gas sorption isotherms. CAU-10-CH3 exhibits excellent of 486 g L-1 adsorption differences CO2 uptake (147%), outperforming benchmark CAU-10-H (392 53%). highly selective over was achieved lower enthalpy (25.18 kJ mol-1) compared that unfunctionalized CAU-10-H. In addition, dynamic column breakthrough experiments further confirm CAU-10-CH3's efficient performance accomplishes scale-up, separation, establishing its promise This approach facilitate development advanced MOF address challenging processes. Thus, this study paves route implementations materials field.

Language: Английский

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