Adsorption of Natural Gas in Metal–Organic Frameworks: Selectivity, Cyclability, and Comparison to Methane Adsorption

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(15), P. 10517 - 10523

Published: April 3, 2024

Evaluation of metal–organic frameworks (MOFs) for adsorbed natural gas (ANG) technology employs pure methane as a surrogate (NG). This approximation is problematic, it ignores the impact other heavier hydrocarbons present in NG, such ethane and propane, which generally have more favorable adsorption interactions with MOFs compared to methane. Herein, using quantitative Raman spectroscopic analysis Monte Carlo calculations, we demonstrate selectivity high-performing MOFs, MOF-5, MOF-177, SNU-70, mixture (95:5) that mimics composition NG. The on storage deliverable capacities these adsorbents during successive cycles desorption, simulating filling emptying an ANG tank, also demonstrated. study reveals gradual reduction performance particularly smaller pore volumes, due accumulation over long-term cycling, until steady state reached substantially degraded performance.

Language: Английский

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Nitrogen-Rich Barium–Organic Framework for Capture and Cocatalysts Free Chemical Fixation of CO₂ via Cyclic Carbonates and Oxazolidinones

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

The carbon dioxide (CO2) capture and utilization strategy has emerged as an innovative multifaceted approach to counteract emissions. In this study, a highly porous muffin polyhedral barium (Ba) ̵ organic framework (BaTATB; H3TATB = 4,4',4″-s-triazine-2,4,6-triyl-tribenzoic acid) was synthesized solvothermally. three-dimensional honeycomb pore architectures were densely populated with Lewis acidic Ba(II) metal sites basic nitrogen-rich triazines. BaTATB demonstrated selective CO2 adsorption high heat of adsorption. Its abundance (Ba clusters) (triazine) makes ideal catalyst for the cycloaddition epoxides in two- three-component reactions. Furthermore, is exceptional recyclable aromatic amines, enabling high-yield synthesis cyclic carbonates oxazolidinone at 1 bar under moderate, solvent-free, cocatalyst-free conditions. Additionally, recycled nine seven consecutive cycles carbonate no substantial decrease catalytic activity. Using density functional theory, we rational design metal-organic frameworks that exhibit excellent conversion.

Language: Английский

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Design, synthesis and applications of functional zirconium-based metal-organic frameworks

Science China Chemistry, Journal Year: 2023, Volume and Issue: 66(12), P. 3383 - 3397

Published: Oct. 25, 2023

Language: Английский

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Successful In Situ Growth of Conductive MOFs on 2D Cobalt-Based Compounds and Their Electrochemical Performance

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(22), P. 10324 - 10334

Published: May 21, 2024

Conductive metal–organic frameworks (cMOFs), as a kind of porous material, are considered to be highly promising materials in the field electrochemistry due their excellent conductivity. However, low specific capacitance pure cMOFs, application supercapacitors is limited. By virtue high theoretical capacity and chemical stability Co-based compounds, this work, cMOFs' M-HHTP (M = Ni, Co, NiCo, HHTP 2,3,6,7,10,11-hexahydroxytriphenylene) grown situ on Co(OH)2, CoP, Co3O4 nanosheets, resulting series electroactive compounds electrode used supercapacitors. Among all Ni-HHTP@Co(OH)2 shows most energy storage performance outstanding cyclic aqueous asymmetric

Language: Английский

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Exploring a Novel Adsorbent for CO₂ Capture and Gas Separation

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

The urgent need to mitigate carbon emissions has spurred research into small-pore zeolites as cost-effective options for CO2 capture by solid adsorbents, particularly in postcombustion and biogas separation applications. In this study we investigate levyne (LEV-type) zeolite, a largely unexplored material adsorption, novel adsorbent gas separation. Using seed-assisted synthesis approaches different conditions, nanosized micron-sized LEV were synthesized characterized terms of pathways, morphology, crystal size, chemical composition. variation the Si/Al ratios compositions resulted significant differences their adsorption capacity selectivity. Micron-sized LEV, with lower ratio = 3.5 higher Na+ content, exhibited superior uptake stronger interactions than (Si/Al 6.6). Dynamic measurements using breakthrough curve analysis revealed that twice its counterpart, along CO2/N2 CO2/CH4 selectivities. This enhanced performance, including better cyclability, emphasizes critical role zeolite improving properties. situ FTIR supported these findings, showing predominantly adsorbs physisorption, allowing efficient desorption He flow only. contrast, primarily physisorbs but also chemisorbed CO2, reflective more highly charged framework (higher Al content) extra-framework cation content. These results highlight importance strategies optimizing properties making them promising candidates physical adsorbents

Language: Английский

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Preparation of M2070-UiO-66-OH@[BMim][PF6]/Pebax mixed matrix membranes and CO2 separation

Polymer Bulletin, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Language: Английский

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Efficient capture and separation of CO₂‐Boosted carbon neutralization enabled by tailorable metal‐organic frameworks: A review

EcoEnergy, Journal Year: 2023, Volume and Issue: 1(2), P. 217 - 247

Published: Dec. 1, 2023

Abstract The long‐term development of fossil energy has led to the destruction carbon balance. Carbon capture technology needs be used reduce emissions before clean completely replaces energy. Metal‐organic frameworks (MOFs), a porous crystalline material, show great potential in gas adsorption and attracted attention. predictability MOFs' structure function also make it possible use computational methods advance accelerate research. This review gives brief overview dioxide separation by MOFs, including membrane separation. In future, is expected crucial area research for applications due its favorable characteristics such as high treatment efficiency low footprint, while mixed matrix membranes (MMMs) have been given more attention scholars their lower cost better performance. summary, developing high‐performance MOFs or MOF derivatives researching efficient methods, application MOF‐based MMMs, should focus future this field.

Language: Английский

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Integration of Plasmonic Ag(I) Clusters and Fe(II) Porphyrinates into Metal‐Organic Frameworks for Efficient Photocatalytic CO2 Reduction Coupling with Photosynthesis of Pure H2O2

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(47)

Published: Aug. 12, 2024

Abstract Efficient photocatalytic CO 2 reduction coupled with the photosynthesis of pure H O is a challenging and significant task. Herein, using classical photoreduction site iron porphyrinate as linker, Ag(I) clusters were spatially separated evenly distributed within new metal–organic framework (MOF), namely Ag 27 TPyP‐Fe . With water electron donors, exhibited remarkable performances in artificial photosynthetic overall reaction yield 36.5 μmol g −1 h ca 100 % selectivity, well evolution rate 35.9 Since liquid phase can be more readily from gaseous products photoreduction, high‐purity concentration up to 0.1 mM was obtained. Confirmed by theoretical calculations established energy level diagram, reductive iron(II) porphyrinates oxidative an integrated functioned synergistically achieve photosynthesis. Furthermore, photoluminescence spectroscopy photoelectrochemical measurements revealed that robust connection ligands facilitated efficient charge separation rapid transfer, thereby enhancing activity.

Language: Английский

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Greenhouse sulfur hexafluoride gas capture and separation using emerging porous solids

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 515, P. 215958 - 215958

Published: May 23, 2024

Language: Английский

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Surfactant-metal-organic framework complexes and their derivatives: advances in electrocatalysis

Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(10), P. 3209 - 3222

Published: Aug. 14, 2024

Language: Английский

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