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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One new MOF with hierarchical pores achieving efficient one-step purifying C2H2, recycling CH4 and eliminating CO2 in C2H2 production

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159641 - 159641

Published: Jan. 1, 2025

Language: Английский

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Pore Space Partition Enabled by Lithium(I) Chelation of a Metal–Organic Framework for Benchmark C₂H₂/CO₂ Separation

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Adsorptive separation of acetylene (C2H2) from carbon dioxide (CO2) offers a promising approach to purify C2H2 with low-energy footprints. However, the development ideal adsorbents simultaneous high adsorption and selectivity remains great challenge due their very small molecular sizes physical properties. Herein, we report lithium(I)-chelation strategy for pore space partition (PSP) in microporous MOF (Li+@NOTT-101-(COOH)2) achieve uptake selectivity. The chelation model Li+ ions within framework was visually identified by single-crystal X-ray diffraction studies. immobilized were found have two functions: (1) partitioning large cages into smaller ones while maintaining surface area (2) providing specific binding sites selectively take up over CO2. resulting Li+@NOTT-101-(COOH)2 exhibits rare combination capture capacity (205 cm3 g-1) C2H2/CO2 (13) at ambient conditions, far surpassing that NOTT-101-(COOH)2 (148 g-1 3.8, respectively) most top-tier materials reported. Theoretical calculations gas-loaded SCXRD studies reveal chelated combined segmented can bind amount through unique π-complexation, accounting improved Breakthrough experiments validated its excellent actual mixtures, one highest productivities 118.9 L kg-1 (>99.5% purity) single adsorption-desorption cycle.

Language: Английский

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Metal–organic frameworks for one-step ethylene purification from multi-component hydrocarbon mixtures

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 523, P. 216291 - 216291

Published: Oct. 29, 2024

Language: Английский

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Pore Engineering in Metal–Organic Frameworks for Enhanced Hydrocarbon Adsorption and Separation

Accounts of Materials Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

ConspectusThe separation and purification of hydrocarbons are crucially important processes in the petrochemical industry, as they essential for producing high-quality chemicals fuels. However, traditional thermal-driven practices, such cryogenic distillation, notoriously energy-intensive, accounting a notable portion energy consumption industrial operations. This has spurred exploration development low-energy sustainable alternative technologies, among which adsorption/desorption-based with porous materials gained significant attention. Metal–organic frameworks (MOFs) emerging ideal hydrocarbon due to their exceptional porosity structural tunability. Account delves into latest advancements microporous MOFs separation, categorizing them based on pore structures: single array, tandem orthogonal array. Single-array feature uniformly arranged channel-like pores along axial direction, facilitating incorporation binding sites surfaces. One functional group used these applications is open metal (OMSs), can engage strong metal-π interactions unsaturated acetylene. For example, JNU-1 demonstrates increased increasing pressure acetylene induce-fit effect, where framework contraction behavior triggered by its OMSs. JNU-4 offers two per center molecules, greatly improving adsorption capacity. On other hand, introducing low-polarity groups, seen JNU-6-CH3, effectively enhance performance favor alkanes while maintaining integrity under humid conditions. Another methyl group-modified MOF, JNU-5-CH3, exhibits an acetylene-triggered gate-opening effect multiple supramolecular Tandem-array provide enhanced selectivity capacity through interconnection spacious cavities narrow apertures. instance, JNU-2 pore-channel interconnected structure improved efficiency C2H6/C2H4 hexane isomers. The slim channels connecting large act screening matching-sized molecules pass through, function storage Orthogonal-array MOFs, like JNU-3a, one-dimensional (1D) that enable rapid diffusion, complemented molecular pockets both sides facilitate selective recognition. dynamic "gourd-shaped" opening pocket adaptability when interacting different hydrocarbons, allowing sieving-like propylene/propane, well efficient ethylene from mixtures alkynes various sizes. Overall, designability tunability MOF structures make promising candidates discriminating targeted multicomponent mixtures, offering energy-efficient solutions challenging separations.

Language: Английский

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Ni-Based Anionic Metal–Organic Framework for Efficient Separation of C₂H₂ from C₂H₄ and CO₂ Mixtures

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 517 - 523

Published: Jan. 6, 2025

Selective separation of acetylene (C2H2) from carbon dioxide (CO2) and ethylene (C2H4) remains a significant challenge in the field gas separation. Non-thermally driven technology based on metal–organic frameworks (MOFs) offers an efficient environmentally friendly approach. Herein, Ni-based anionic MOF (iMOF-1A) was employed for first time. The differential recognition various molecules is enhanced by suitable pore sizes, accessible aromatic rings, cations outside framework. Experimental results demonstrate that iMOF-1A exhibits exceptional uptake ratios C2H2/CO2 (2.27) C2H2/C2H4 (1.48), which surpass those most previously reported materials. Furthermore, ideal adsorbed solution theory (IAST) selectivity calculations display promising theoretical performance, supported molecular simulations. Breakthrough experiments further validate not only effectively separates mixtures but also excellent performance humidity stability C2H2/C2H4/CO2 ternary mixtures.

Language: Английский

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Recent progress in metal-organic frameworks (Part II—material application)

Science China Chemistry, Journal Year: 2025, Volume and Issue: 68(5), P. 1642 - 1702

Published: Jan. 3, 2025

Language: Английский

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Breakthrough developments in Metal-Organic frameworks (MOFs) for efficient C4 hydrocarbon adsorption separation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160992 - 160992

Published: Feb. 1, 2025

Language: Английский

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Fast diffusion and High C2H2 Capture in a 2D MOF with Oxygen-riched Wide Channels for Efficient C2H2/CO2 Separation

Composites Part B Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112414 - 112414

Published: March 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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