Experimental and kinetic evaluation on cobalt Salen conjugated organic polymers for CO2 cycloaddition reactions and iodine vapor adsorption

Journal of Molecular Liquids, Год журнала: 2024, Номер 401, С. 124651 - 124651

Опубликована: Апрель 4, 2024

Язык: Английский

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Multi-components reactions on construction carboxylic-rich conjugated polymeric crown ethers as sustainable materials for CO2-fixation and iodine vapor adsorption: Experimental and kinetics

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(2), С. 112279 - 112279

Опубликована: Фев. 20, 2024

Язык: Английский

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Construction on ferrocene-derived imidazole ionic polymers for carbon dioxide cycloaddition and iodine capture

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 115695 - 115695

Опубликована: Фев. 1, 2025

Язык: Английский

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Ionic Liquid Immobilized Fe‐MIL‐101‐NH₂ Efficiently Catalyzes the Chemical Fixation of CO₂ with Epoxides to Form Cyclic Carbonates

ChemistrySelect, Год журнала: 2024, Номер 9(4)

Опубликована: Янв. 26, 2024

Abstract In this work, two ionic liquids (ILs) immobilized metal‐organic frameworks (MOFs), Fe‐MIL‐101‐3N(BuBr) and Fe‐MIL‐101‐N(Bnme 2 )Br, were obtained by modifying amino groups in Fe‐MIL‐101‐NH with bromobutane quaternary ammonium salt. The liquid MOFs have Lewis acid sites (Fe 3+ ) nucleophilic (Br − ), which can synergistically catalyze the cycloaddition reaction of CO epoxides. Various cyclic carbonate derivatives excellent yields under optimal conditions. Additionally, we found that )Br exhibited highest catalytic activity it be easily recovered reused for at least 5 times without loss activity. Our method preparing bifunctional catalysts provides a new approach to design chemical conversion .

Язык: Английский

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High-Performance Zn-Zr-Al(O) Mixed Oxides Catalysts for Co2 Sustainable Cycloaddition with Cyclohexene Oxide

Опубликована: Янв. 1, 2025

The cycloaddition of CO2 with cyclohexene oxide is a promising method to convert into value-added products, such as cyclohexane carbonate, which may contribute reducing greenhouse gas emissions. However, the process often relies on expensive, non-recoverable homogeneous catalysts. This study explores Zn-Zr-Al heterogeneous catalysts derived from layered double hydroxides synthesized via co-precipitation. Zn/Zr molar ratio significantly influenced physicochemical properties catalysts, including crystallite size, surface area, adsorption capacity, and carbonate species. Higher Zr content increased microporosity, capture, correlating catalytic performance. Under solvent-free conditions (50 bar CO2, 70 °C, 24 h), experiments without cocatalyst achieved low conversions (<20%). Adding TBAB improved conversion ~40%. Optimal performance was observed for 3, yielding 88.8%–97.6% selectivities 95.8%–96.1% temperature 85 °C 100 °C. Pressure enhancements (10–30 bar) further boosted 78.8% 97.2%, reaching 97.1%. catalyst demonstrated good reusability, maintaining 94.3%–96.2% 94.6%–95.9% over three cycles. These results highlight potential stable, reusable, environmentally friendly systems under mild conditions.

Язык: Английский

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High-performance Zn-Zr-Al(O) mixed oxides catalysts for CO₂ sustainable cycloaddition with cyclohexene oxide

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(2), С. 115838 - 115838

Опубликована: Фев. 18, 2025

Язык: Английский

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Hydroxyl-Functionalized Poly(triphenylimidazolinium bromide) as an Efficient Catalyst for the Cycloaddition of CO2 to Epoxides

Catalysis Letters, Год журнала: 2025, Номер 155(5)

Опубликована: Апрель 9, 2025

Язык: Английский

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Facile construction novel functionalized hyper-crosslinked porous crown-polymers for adsorbing iodine and strontium

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 133445 - 133445

Опубликована: Май 1, 2025

Язык: Английский

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Anion-rich porous poly(ionic liquid)s for efficient CO2 conversion into cyclic carbonates through hydrogen bonding synergistic effect

Molecular Catalysis, Год журнала: 2023, Номер 552, С. 113684 - 113684

Опубликована: Ноя. 16, 2023

Язык: Английский

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Synthesis of “all-in-one” hypercrosslinked organic polymers: Experimental and kinetic models for CO2 chemical fixation and iodine adsorption

Sustainable Energy & Fuels, Год журнала: 2024, Номер 8(19), С. 4484 - 4495

Опубликована: Янв. 1, 2024

A series of “all-in-one” hypercrosslinked polymers have been constructed by Friedel–Crafts alkylation and quaternization reactions, which exhibit superior CO 2 conversion performance effective iodine adsorption capacity.

Язык: Английский

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