Catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: Reaction pathways
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Fecha
2022-07-01
Profesor/a Guía
Facultad/escuela
Idioma
en
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Editor
Elsevier B.V.
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Licencia CC
CC BY-NC-ND 4.0 CÓDIGO LEGAL
Atribución-NoComercial-SinDerivadas 4.0 Internacional
Licencia CC
https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es
Resumen
A systematic study on the use of noble metals (Pd, Pt, Au) supported on titanate nanotubes (NT-Ti) for selectively producing BTX and p-cymene from waste tire pyrolysis is provided here. All the materials were characterized for chemical, textural and structural properties using a range of analytical techniques. The M/NT-Ti (M: Pd, Pt, or Au) catalysts exhibit low nanoparticle sizes (1.8 <NPs[removed] Pt ≈ Au > support > non-catalyst. The Py-GC/MS suggest that the catalysts participate in the secondary reactions of dealkylation, dehydrogenation, isomerization, aromatization, and cyclization leading to a higher formation of BTX than the uncatalyzed reaction. Finally, a comprehensive reaction pathway describing the catalytic pyrolysis of WT over Pd/NT-Ti was proposed by studying the catalytic pyrolysis of individual polymers constituting the waste tires, and D,L-Limonene. © 2021 Elsevier B.V.
Notas
Indexación: Scopus.
Palabras clave
BTX, Catalytic pyrolysis, Noble metal, Titanate nanotubes, Waste tires
Citación
Catalysis Today, Volume 394-396, Pages 475 - 485, 1 July 2022
DOI
10.1016/j.cattod.2021.06.029