1. Clove (Syzygium aromaticum) for greener plastic catalytic pyrolysis: A novel catalyst for enhanced hydrogen production and carbon capture.
- Author
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Sobri, Sobri, Wardana, I.N.G., Wijayanti, Widya, and Hamidi, Nurkholis
- Subjects
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CARBON sequestration , *CHEMICAL decomposition , *BIODEGRADABLE plastics , *PLASTIC scrap , *FREE radical scavengers - Abstract
This research investigated a novel activated carbon-clove catalyst (AC-Cl) for the degradation of municipal plastic waste (LDPE, PP, PS) into valuable gaseous products (H 2 and CH 4) more efficiently. We used computer simulations (DFT/B3LYP) and experiments to analyze how clove (Cl) in the AC catalyst affects the plastic decomposition process by pyrolysis. The presence of phenolic functional groups from clove in the catalyst modulates not only its electronic and physical properties but also creates more active microsites, thereby accelerating plastic decomposition and preventing unwanted molecule recombination. This improved performance translates to a significant increase in H 2 production rate (up to 20.23%) and CH 4 production rate (up to 17.24%) at lower temperatures, requiring less energy. Furthermore, the AC-Cl catalyst shows promise for capturing carbon during plastic pyrolysis. The clove addition enhances the catalyst's adsorption capacity of radicals produced during the decomposition reaction, as evidenced by a 96.9% increase in captured carbon atoms. [Display omitted] • Clove enhanced Fermi energy and smaller bandgap energy. • Clove improved AC surface properties, create abundant active microsites. • Clove's phenolic functional group as radical scavenger for higher H 2 production. • The catalyst boosts the decomposition reaction, preventing the recombination reaction. • Rise potential as carbon capture agent. [ABSTRACT FROM AUTHOR]
- Published
- 2025
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