Nonpolar microporous Metal-Organic framework decorated with multiple functional sites for efficient Ethane/Ethylene separation

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 354, P. 128696 - 128696

Published: Feb. 1, 2025

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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Leveraging Surface Polarity in a Cost‐Effective Metal–Organic Framework for Olefin Purification From Methanol‐to‐Olefin Products

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

Abstract Research over the years has revealed immense potential of metal–organic frameworks (MOFs) for purifying olefins such as ethylene (C 2 H 4 ) and propylene 3 6 ). However, many these MOFs face challenges in terms economic viability, particularly production scalability, long‐term stability, process capability. In this study, we present a low‐cost easily scalable synthesis robust MOF material (JNU‐74a), featuring balanced surface polarity that allows one‐step C purification from methanol‐to‐olefin (MTO) products. By incorporating highly electronegative atoms on nonpolar surface, JNU‐74a exhibits substantially larger absorption capacity stronger binding affinity ethane compared to , evidenced by their gas adsorption isotherms heats measurements. In‐depth analyses through situ single‐crystal X‐ray diffraction (SCXRD) gas@JNU‐74a unveil multiple supramolecular bindings favor confirming preferential . Breakthrough experiments demonstrate can efficiently produce polymer‐grade (≥99.95%) (≥99.5%) /C mixtures different ratios single adsorption‐desorption cycle. With its impressive separation capability, high chemical cost‐effective production, holds promise olefin MTO products other challenging industrial separations.

Language: Английский

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Efficient separation of methanol-to-olefins products using a metal-organic framework with supramolecular binding sites

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152442 - 152442

Published: May 21, 2024

Language: Английский

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Green synthesis and performance of micro-mesoporous ZSM-5/Y composite zeolite with hierarchical pore structure for vacuum gas oil (VGO) catalytic cracking

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 506, P. 159701 - 159701

Published: Jan. 1, 2025

Language: Английский

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Substituent Modulation of Structures, Luminescence, and TNP Sensing Abilities for Coordination Polymers

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(17), P. 7141 - 7150

Published: Aug. 22, 2024

The modulation of coordination polymers (CPs) with specific structures and functions is greatly challenging. This work explores the function substituent in structures, luminescence, sensing abilities for CPs. Compared 4,4′-((9H-fluoren-9-ylidene)-methylene)dipyridine (L-2), a new aggregate-induced emission (AIE) molecule 4,4′-((2,7-di-tert-butyl-9H-fluoren-9-ylidene)-methylene)dipyridine (L-1) two tert-butyl substituents was successfully synthesized. L-1 L-2 were developed as functional ligands to construct distinct one-dimensional (1-D) double-chain CPs [Cd(L-1)(2,5-TDC)(H2O)]n (1) [Cd(L-2)(2,5-TDC)(H2O)]n (2) through very similar synthetic routes. 1 fabricated by linking 2,5-TDC-Cd single chains form architecture. Meanwhile, 2 has skeleton terminal ligands. have good water thermal stabilities but show different luminescent properties. 1, an obviously enhanced TNP ability. quenching constant (4.5 × 104 M–1) toward nearly three times higher than that (1.55 1. detection limit (5.27 10–4 mM) about order magnitude lower (4.67 10–3 mechanism performance explored detail.

Language: Английский

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An MOF-Based Single-Molecule Propylene Nanotrap for Benchmark Propylene Capture from Ethylene

Chem & Bio Engineering, Journal Year: 2024, Volume and Issue: 1(11), P. 952 - 959

Published: July 29, 2024

Highly selective capture and separation of propylene (C3H6) from ethylene (C2H4) presents one the most crucial processes to obtain pure C2H4 in petrochemical industry. The performance current physisorbents is commonly limited by insufficient C3H6 binding affinity, resulting poor low-pressure uptakes or inadequate C3H6/C2H4 selectivities. Herein, we realize a unique single-molecule nanotrap an ultramicroporous MOF material (Co(pyz)[Pd(CN)4], ZJU-74a-Pd), exhibiting benchmark capacity at regions. This MOF-based features sandwichlike strong multipoint sites perfect size match with molecules, providing ultrastrong affinity maximal Q st value (55.8 kJ mol-1). affords exhibit highest low pressures (60.5 103.8 cm3 cm-3 0.01 0.1 bar) record-high selectivity (23.4). Theoretical calculations reveal that perfectly size-matched pore cavities combined multibinding enable this maximize mainly accounting for its record selectivity. Breakthrough experiments further confirm excellent actual 1/99 50/50 mixtures, affording remarkably high productivities 17.1 3.4 mol kg-1, respectively.

Language: Английский

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Scale-up synthesis of a low-cost cobalt formate framework for efficient C3H6/C2H4 separation and shaping performance study

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 130638 - 130638

Published: Nov. 1, 2024

Language: Английский

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Cobalt-Cluster-Based Metal–Organic-Framework-Catalyzed Carboxylative Cyclization of Propargylic Amines with CO₂ from Flue Gas

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

Published: Jan. 27, 2025

The fixation of carbon dioxide (CO2) directly from flue gas into valuable chemicals like 2-oxazolidinones is great significance for economic and environmental benefits, which typically catalyzed by noble-metal catalysts under harsh conditions. Herein, a novel 2-fold interpenetrated framework {[Co3(μ2-O)(TCA)2(HDPTA)2]·2H2O·2DMF}n [Co(II)-based metal-organic (Co-MOF)] containing [Co3] clusters highly dense amino groups (-NH2) dispersed in the channel was prepared, exhibiting high solvent/pH stability CO2 adsorption capacity (24.9 cm3·g-1). Catalytic experiments demonstrated that Co-MOF could catalyze carboxylative cyclization propargylic amines to generate with yields up 98% mild conditions gas. In addition, retained its structure catalytic activity after five-cycle experiments, showing promising practical application. Density functional theory (DFT) calculation suggested centers MOF activated C≡C much more binding energy than Co(NO3)2, partly accounting Co-MOF. This work demonstrates first Co-based material efficient as source, inspiring further rational design porous utilization.

Language: Английский

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Efficient One-Step Purification of Methanol-to-Olefin Products Using a Porphyrinyl MOF to Achieve Record C₂H₄ and C₃H₆ Productivity

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

Published: March 29, 2025

The separation of methanol-to-olefin (MTO) products to obtain high-purity ethylene (C2H4) and propylene (C3H6) is a challenging yet critical task, as these compounds are essential industrial raw materials for polymer synthesis. However, developing adsorbents with high selectivity productivity C2H4/C3H6 remains significant challenge an urgent necessity. In this study, porphyrinyl metal-organic framework (MOF), Al-TCPP, was developed the simultaneous recovery C3H6 C2H4 through one-step adsorption-desorption process. Benefiting from its well-developed microporous structure abundant N- O-accessible sites, Al-TCPP demonstrated exceptional adsorption capacities ethane (C2H6) over under ambient conditions. (in cm3·g-1) reached 162.4 118.5 C2H6 at 298 K 100 kPa. ideal adsorbed solution theory (IAST) values C3H6/C2H4 C2H6/C2H4 were 10.1 1.8, respectively. Thermodynamic studies theoretical calculations revealed stronger interactions between molecules than C2H4. Systematic breakthrough experiments outstanding performance binary mixtures, well ternary C3H6/C2H6/C2H4 achieving record productivities 150.2 86.5 L·kg-1 polymer-grade (≥99.9%) (≥99.5%), Notably, remained stable variable flow rates, temperatures, humidities, multiple cycles. Overall, study highlighted highly competitive adsorbent addressing challenges in MTO product separation. Moreover, it offered valuable insights into design MOFs heteroatom-rich accessible sites efficient low-carbon hydrocarbons.

Language: Английский

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