Synthesis of activated carbon/MgO monolith using Astragalus material for carbon dioxide adsorption DOI

Mohsen Nademi,

Gholamreza Moradi, Mohsen Mansouri

и другие.

International Journal of Environmental & Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 1 - 26

Опубликована: Ноя. 28, 2024

Adsorption technology has emerged as a viable approach to reducing CO2 emissions. Generally, activated carbons-based adsorbents, in particular, are promising due their abundant availability, tunable physicochemical properties, and suitability over wide temperature range. In this study, carbons (ACC) modified with magnesium oxide (MgO) was evaluated for carbon dioxide capture an adsorption process. ACC, the feedstock, produced using fast pyrolysis of Astragalus. The availability cheapness Astragalus material next MgO led synthesis new compound called ACC/MgO. aim synthetic achieve cost-effective adsorption. This somehow shows innovation work. Another is adsorbent moulding (monolith) its industrialisation. underwent various analyses, including FTIR, XRD, SEM, BET, EDX. Fifteen experiments were designed response surface methodology-Box-Behnken (RSM-BBD) design determine maximum capacity (ADC). One optimal points, highest ADC (1.355 mmol/g), determined at initial loading 13.26 wt.%, average ACC particle size 0.58 mm, Polyvinyl alcohol (PVA) content 6.34 wt.%. Kinetic models isotherm employed analyse data. findings indicated that entire range could be described by employing fractional-order model. Investigation into diffusion mechanism revealed both film intraparticle predominantly governed rate-limiting steps. exhibited favourable regeneration lower temperatures demonstrated consistent regenerability following seven cycles regeneration. research suitable high efficiency capture.

Язык: Английский

Single-Molecule Traps in Covalent Organic Frameworks for Selective Capture of C 2 H 2 from C 2 H 4 -Rich Gas Mixtures DOI Creative Commons

Yilun Zhou,

Yinghui Xie,

Xiaolu Liu

и другие.

Research, Год журнала: 2024, Номер 7

Опубликована: Янв. 1, 2024

Removing trace amounts of acetylene (C 2 H ) from ethylene 4 )-rich gas mixtures is vital for the supply high-purity C to chemical industry and plastics sector. However, selective removal challenging due similar physical properties . Here, we report a “single-molecule trap” strategy that utilizes electrostatic interactions between one-dimensional (1D) channel covalent organic framework (denoted as COF-1) molecules massively enhance adsorption selectivity toward over are immobilized via with O atom C=O groups, N C≡N phenyl groups in 1D channels COF-1. Due its exceptionally high affinity , COF-1 delivered remarkable uptake 7.97 cm 3 /g at 298 K 0.01 bar, surpassing all reported COFs many other state-of-the-art adsorbents under conditions. Further, demonstrated outstanding performance separation breakthrough experiments dynamic adsorbed capacity 0.17 2,000 s/g when exposed 0.5 ml/min -rich mixture (99% K, directly producing rate 3.95 /g. Computational simulations showed strong single-molecule traps were responsible excellent performance. also robust, providing promising new efficient practical purification.

Язык: Английский

Процитировано

10
Potential of carbon micro/nanofibers derived from lignocellulose biomass valorisation for CO2 adsorption: A review on decarbonization biotechnology for climate change solutions DOI
Auliya Ilmiawati, Achmad Solikhin, Silvia Uthari Nuzaverra Mayang Mangurai

и другие.

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 140305 - 140305

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Preparation of Chemically Activated Porous Carbon Derived from Rubber-Seed Shell for CO2 Adsorption DOI Open Access
Syeda Saba Fatima,

Azry Borhan,

Muhammad Faheem

и другие.

Processes, Год журнала: 2025, Номер 13(4), С. 1181 - 1181

Опубликована: Апрель 14, 2025

The utilization of agricultural biomass for the synthesis carbonaceous adsorbents is an active research topic because a wide range precursors and good adsorption properties resulting adsorbent materials. Rubber-seed shell (RSS) suitable precursor activated carbon (AC) due to its naturally high content. In addition, it available in large quantities growing rubber plantations Malaysia. this work, produced via chemical activation RSS CO2 adsorption. A two-step modified three-step method using K2CO3 as activating agent are used preparation RSS-derived AC. AC samples prepared by both techniques compared based on structural capacity identify more effective method. Carbon content increased from 48.40 wt.% untreated >77 samples, indicating successful activation. BET surface area AC2 AC3 was 474.7 m2/g 683.4 m2/g, respectively. highest 60.06 mg/g at 25 °C obtained AC3. Overall, has superior performance.

Язык: Английский

Процитировано

0
Demineralization of Palm Kernel Shell as a Process for the Enhancement of the Electrochemical Performance of Lithium-Sulfur Cellsdemineralization of Palm Kernel Shell as a Process for the Enhancement of the Electrochemical Performance of Lithium-Sulfur Cells DOI
Julián Acevedo,

Carolina Rosero,

Jennifer Laverde

и другие.

Опубликована: Янв. 1, 2024

Carbon materials derived from biomass have been applied widely in Li-S batteries; however, the mineral matter present could impact properties of carbons and affect electrochemical performance. This work removes palm kernel shells to identify effect minerals on physicochemical activated carbon correlate them performance batteries. The content such as silicon, iron, potassium, were reduced by acid washing. textural, conductive increased absence minerals. Electrochemical results reveal that demineralized sample used a sulfur host can increase 23% capacity for high charge discharge rates. Hence, removal is an important step consider application hosts

Язык: Английский

Процитировано

0
Demineralization of a Carbon Material Derived from Palm Kernel Shells as a Process for the Enhancement of the Electrochemical Performance of Lithium–Sulfur Cells DOI
Julián Acevedo, Nataly Carolina Rosero‐Navarro, Jennifer Laverde

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 19, 2024

Carbon materials derived from biomass have been widely used in Li-S batteries; however, the mineral matter present could impact properties of carbons and affect electrochemical performance. In this study, removal palm kernel shells is reported to identify effect minerals on physicochemical activated carbon correlate them performance batteries. The content such as silicon, iron, potassium was decreased by acid washing. textural conductive were increased absence minerals. Electrochemical results reveal that demineralized sample a sulfur host can increase capacity for high charge discharge rates 23%. Hence, an important step consider application hosts

Язык: Английский

Процитировано

0
Synthesis of activated carbon/MgO monolith using Astragalus material for carbon dioxide adsorption DOI

Mohsen Nademi,

Gholamreza Moradi, Mohsen Mansouri

и другие.

International Journal of Environmental & Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 1 - 26

Опубликована: Ноя. 28, 2024

Adsorption technology has emerged as a viable approach to reducing CO2 emissions. Generally, activated carbons-based adsorbents, in particular, are promising due their abundant availability, tunable physicochemical properties, and suitability over wide temperature range. In this study, carbons (ACC) modified with magnesium oxide (MgO) was evaluated for carbon dioxide capture an adsorption process. ACC, the feedstock, produced using fast pyrolysis of Astragalus. The availability cheapness Astragalus material next MgO led synthesis new compound called ACC/MgO. aim synthetic achieve cost-effective adsorption. This somehow shows innovation work. Another is adsorbent moulding (monolith) its industrialisation. underwent various analyses, including FTIR, XRD, SEM, BET, EDX. Fifteen experiments were designed response surface methodology-Box-Behnken (RSM-BBD) design determine maximum capacity (ADC). One optimal points, highest ADC (1.355 mmol/g), determined at initial loading 13.26 wt.%, average ACC particle size 0.58 mm, Polyvinyl alcohol (PVA) content 6.34 wt.%. Kinetic models isotherm employed analyse data. findings indicated that entire range could be described by employing fractional-order model. Investigation into diffusion mechanism revealed both film intraparticle predominantly governed rate-limiting steps. exhibited favourable regeneration lower temperatures demonstrated consistent regenerability following seven cycles regeneration. research suitable high efficiency capture.

Язык: Английский

Процитировано

0