One-step Synthesis of Mesoporous ZnO@ZIF-8 Composites for CO2, CH4, N2 Adsorption and Separation with Potential Application for Industrial Biogas

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 181123 - 181123

Опубликована: Май 1, 2025

Язык: Английский

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One-Step Synthesis of In Situ Sulfur-Doped Porous Carbons for Efficient CO2 Adsorption

Sustainability, Год журнала: 2025, Номер 17(11), С. 4952 - 4952

Опубликована: Май 28, 2025

Porous carbons for CO2 capture were synthesized from a sulfur-rich bituminous coal via one-step method concurrently including carbonization and KOH activation. The activation parameters controlled by varying KOH/coal mass ratios (1:1, 2:1, 3:1) temperatures (700 °C, 800 900 °C) to optimize their performance. surface physicochemical structural properties of these porous characterized applying Brunauer–Emmett–Teller (BET) area analysis, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy, Raman spectroscopy. results show that the SBET sample SCC-800-3 is as high 2209 m2/g, adsorption capacity SCC-700-2 at normal temperature pressure reaches 3.46 mmol/g, CO2/N2 selectivity SCC-700-1 24. synergistic effect moderate conditions ensures optimal pore evolution without compromising sulfur species retention. Furthermore, also demonstrate excellent cycling stability thermal stability. fitting isotherm model all samples further conducted. Adsorption modeling demonstrated superior accuracy with dual-parameter Freundlich tri-parametric Redlich–Peterson formulations across samples, indicating high-sulfur coal-based belongs multilayer carbon heterogeneous. on exhibits spontaneous, exothermic behavior according thermodynamic data. These findings confirm great potential CO2. presenting research provides strategy leverages in situ doping milder conditions, achieving high-efficiency utilization resources developing low-cost materials.

Язык: Английский

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CO2 adsorption by ethane periodic mesoporous organosilica at low temperatures and high pressure

Journal of environmental chemical engineering, Год журнала: 2023, Номер 11(5), С. 110582 - 110582

Опубликована: Июль 18, 2023

In this work, the maximum CO2 adsorption capacity of an ordered mesoporous organosilica with ethylene bridges (PMO-Ethane) was studied. The capture achieved for sample at 0 °C and 34 atm (827.8 mg·g-1). This result better than that obtained by most studies on other materials found in literature. Approximately 0.33 g PMO-Ethane would be sufficient to shrink concentration atmospheric 1 m3 preindustrial levels. A study successive adsorption-desorption cycles has demonstrated material's potential use reversible multicycle processes. curves were fitted using mathematical models: Langmuir, Freundlich, Sips, Toth, DubininRadushkevich Temkin. Previously, several techniques used characterize material: X-Ray diffraction (XRD), surface area (SBET) porosity, thermogravimetric differential thermal analysis (TGA-DTA), particle size, transmission electron microscopy (TEM) scanning (SEM). These results contribute development new GHG technologies.

Язык: Английский

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New porous amine-functionalized biochar-based desiccated coconut waste as efficient CO2 adsorbents

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(11), С. 16309 - 16327

Опубликована: Фев. 5, 2024

Язык: Английский

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An economic one-step solvent-free method to synthesize N, S co-doped porous carbons for efficient CO2 capture

Journal of Materials Science, Год журнала: 2024, Номер 59(30), С. 13931 - 13947

Опубликована: Июль 25, 2024

Язык: Английский

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