Amination of brominated nanoporous activated carbon beads for the preparation of CO<sub>2</sub> adsorbents

Grishchenko, Liudmyla M.; Tsapyuk, G. G.; Novichenko, Natalia S.; Mischanchuk, Oleksandr V.; Yatsymyrskiy, Andrii V.; Boldyrieva, Olga Yu.; Diyuk, Vitaliy E.

doi:10.1080/15421406.2020.1732535

Cited by 14 publications

(3 citation statements)

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“…Similar results are observed using sulfonated carbon fibers synthesized from brominated carbon fibers. , In another study, a bromine-functionalized porous catalyst, prepared by the bromination of triazine-based porous organic polyuria using liquid bromine, exhibits a 99.2% selectivity for 5-hydroxymethylfurfural production from fructose . Moreover, the halogen-doped graphitic carbon nitrides show excellent performance as metal-free photocatalysts, which have been applied in CO 2 reduction, water splitting, and contaminant removal. − Halogen-decorated materials applied for CO 2 capture have been reported recently. , Research indicates that N-doped activated carbon beads show high CO 2 adsorption capacities, which are synthesized through the bromination of activated carbon beads followed by the amination of brominated carbon beads …”

Section: Upcycling and Utilization Of Halogenssupporting

confidence: 53%

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Recent Advancements in Pyrolysis of Halogen-Containing Plastics for Resource Recovery and Halogen Upcycling: A State-of-the-Art Review

Ma,

Kumagai,

Saito

et al. 2024

Environ. Sci. Technol.

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Plastic waste has emerged as a serious issue due to its impact on environmental degradation and resource scarcity. Plastic recycling, especially of halogen-containing plastics, presents challenges due to potential secondary pollution and lower-value implementations. Chemical recycling via pyrolysis is the most versatile and robust approach for combating plastic waste. In this Review, we present recent advancements in halogen-plastic pyrolysis for resource utilization and the potential pathways from "reducing to recycling to upcycling" halogens. We emphasize the advanced management of halogen-plastics through copyrolysis with solid wastes (waste polymers, biomass, coal, etc.), which is an efficient method for dealing with mixed wastes to obtain high-value products while reducing undesirable substances. Innovations in catalyst design and reaction configurations for catalytic pyrolysis are comprehensively evaluated. In particular, a tandem catalysis system is a promising route for halogen removal and selective conversion of targeted products. Furthermore, we propose novel insights regarding the utilization and upcycling of halogens from halogen-plastics. This includes the preparation of halogen-based sorbents for elemental mercury removal, the halogenation−vaporization process for metal recovery, and the development of halogendoped functional materials for new materials and energy applications. The reutilization of halogens facilitates the upcycling of halogen-plastics, but many efforts are needed for mutually beneficial outcomes. Overall, future investigations in the development of copyrolysis and catalyst-driven technologies for upcycling halogen-plastics are highlighted.

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Section: Upcycling and Utilization Of Halogenssupporting

confidence: 53%

“…170,171 Research indicates that N-doped activated carbon beads show high CO 2 adsorption capacities, which are synthesized through the bromination of activated carbon beads followed by the amination of brominated carbon beads. 172…”

Section: Halogenation−vaporization Processmentioning

confidence: 99%

Recent Advancements in Pyrolysis of Halogen-Containing Plastics for Resource Recovery and Halogen Upcycling: A State-of-the-Art Review

Ma,

Kumagai,

Saito

et al. 2024

Environ. Sci. Technol.

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“…Our results also demonstrate that this method of bromination is more efficient than the methods of bromination previously described in the literature. [28,29]…”

Section: Bromination Of Acmentioning

confidence: 99%

The development of a novel non‐leaching flocculant, derived from activated carbon and polyacrylamide

et al. 2023

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Canadian oil sands are the third largest oil reserves in the world, containing an estimated 28.3 billion m3 of recoverable bitumen. Extraction of bitumen via surface mining and water‐based extraction leads to the formation of tailings ponds, which contain slow settling mature fine tailings (MFT). These MFT can take hundreds of years to settle on their own. Polymer flocculants are used to improve the settling rate of the MFT. This requires a significant amount of polymer, which may itself have environmental impacts. Here, we describe development of a solid‐state flocculant using activated carbon (AC) as a backbone for polyacrylamide (PAM) flocculant branches, with the intention that this solid‐state flocculant would reduce the amount of polymer applied, replacing the bulk of the material with hydrophobic AC, and limit leaching of these materials. The development of this flocculant is achieved by bromination of AC followed by reaction with cis‐octadecen‐1‐ol at the carbon surface. Subsequently, PAM was attached to the alkene of the enol via thermally induced radical polymerization. This AC‐PAM demonstrated effective flocculation of 5% MFTs at a minimum dosage of 120,000 ppm with an initial settling rate of 33 m/h. Thermogravimetric analysis determined that the AC‐PAM had 2% PAM content, indicating that the system only uses 2400 ppm polymer, which is a significant reduction when compared to the typical 20,000 ppm of PAM otherwise required to flocculate 5% MFTs. This demonstrates a marked reduction in the polymer required to flocculate MFTs, reducing potential environment impact.

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Microwave Properties of Composite Films Based on Polyvinyl Chloride and Brominated Activated Carbon

Grishchenko,

Zhytnyk,

Matushko

et al. 2024

ChemistrySelect

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Brominated activated carbon (AC/Br2) powder was used as a filler in poly(vinyl chloride) (PVC) to prepare PVC‐based composite films by hot pressing. The AC/Br2 filler was obtained by liquid phase bromination and contained both oxygen and bromine. In comparison with the unmodified AC, the AC/Br2 was subjected to thermogravimetric analysis in air and argon and temperature‐programmed desorption mass spectrometry in vacuum, which identified carbon‐oxygen and bromine groups and showed the comparable thermal stability of AC/Br2 and AC. XPS shows the predominance of phenolic groups among the carbon‐oxygen groups. Scanning electron microscopy and transmission electron microscopy showed preserved morphology and microstructure, while N2 adsorption showed a microporosity decrease after bromination. FTIR analysis suggested non‐chemical interactions between PVC and AC/Br2. As the AC/Br2 content in the PVC‐based composite films increases from 0.2 to 30 wt %, the electromagnetic radiation (EMR) reflection at Ka‐band microwave frequencies increases. To reduce the EMR reflection, the proposed composite films should contain a maximum of 0.2 wt % AC/Br2. The results indicate that the microwave properties of PVC‐based composite films can be tuned by adjusting the AC/Br2 content.

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Amination of brominated nanoporous activated carbon beads for the preparation of CO₂ adsorbents

Cited by 14 publications

References 69 publications

Recent Advancements in Pyrolysis of Halogen-Containing Plastics for Resource Recovery and Halogen Upcycling: A State-of-the-Art Review

Recent Advancements in Pyrolysis of Halogen-Containing Plastics for Resource Recovery and Halogen Upcycling: A State-of-the-Art Review

The development of a novel non‐leaching flocculant, derived from activated carbon and polyacrylamide

Microwave Properties of Composite Films Based on Polyvinyl Chloride and Brominated Activated Carbon

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Amination of brominated nanoporous activated carbon beads for the preparation of CO2 adsorbents

Cited by 14 publications

References 69 publications

Recent Advancements in Pyrolysis of Halogen-Containing Plastics for Resource Recovery and Halogen Upcycling: A State-of-the-Art Review

Recent Advancements in Pyrolysis of Halogen-Containing Plastics for Resource Recovery and Halogen Upcycling: A State-of-the-Art Review

The development of a novel non‐leaching flocculant, derived from activated carbon and polyacrylamide

Microwave Properties of Composite Films Based on Polyvinyl Chloride and Brominated Activated Carbon

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Product

Resources

About

Amination of brominated nanoporous activated carbon beads for the preparation of CO₂ adsorbents