Catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: Reaction pathways
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...
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2022
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/154475 |
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I19-R120-10915-154475 |
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I19-R120-10915-1544752023-06-21T20:27:03Z http://sedici.unlp.edu.ar/handle/10915/154475 issn:0920-5861 Catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: Reaction pathways Osorio Vargas, Paula Campos, Cristian H. Torres, Cecilia C. Herrera, Carla Shanmugaraj, Krishnamoorthy Bustamante, Tatiana M. Diaz de Leon, J. N. Medina, Francisco Arteaga-Pérez, Luis E. 2022-07 2023-06-21T12:59:05Z en Ciencias Exactas Química Waste tires Catalytic pyrolysis Noble metal Titanate nanotubes BTX 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<2.2 nm), and a homogeneous pore size distribution. The catalysts demonstrated excellent activity for converting WT into BTX-enriched oil when tested in a micropyrolysis system coupled to chromatography/mass spectrometry (Py–GC/MS). The BTX production was enhanced by the presence of catalysts with a selectivity order as follows Pd > 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. Puede accederse a los datos primarios de este trabajo haciendo clic en "Documentos relacionados". Centro de Investigación y Desarrollo en Ciencias Aplicadas Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf 475-485 |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Química Waste tires Catalytic pyrolysis Noble metal Titanate nanotubes BTX |
| spellingShingle |
Ciencias Exactas Química Waste tires Catalytic pyrolysis Noble metal Titanate nanotubes BTX Osorio Vargas, Paula Campos, Cristian H. Torres, Cecilia C. Herrera, Carla Shanmugaraj, Krishnamoorthy Bustamante, Tatiana M. Diaz de Leon, J. N. Medina, Francisco Arteaga-Pérez, Luis E. Catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: Reaction pathways |
| topic_facet |
Ciencias Exactas Química Waste tires Catalytic pyrolysis Noble metal Titanate nanotubes BTX |
| description |
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<2.2 nm), and a homogeneous pore size distribution. The catalysts demonstrated excellent activity for converting WT into BTX-enriched oil when tested in a micropyrolysis system coupled to chromatography/mass spectrometry (Py–GC/MS). The BTX production was enhanced by the presence of catalysts with a selectivity order as follows Pd > 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. |
| format |
Articulo Articulo |
| author |
Osorio Vargas, Paula Campos, Cristian H. Torres, Cecilia C. Herrera, Carla Shanmugaraj, Krishnamoorthy Bustamante, Tatiana M. Diaz de Leon, J. N. Medina, Francisco Arteaga-Pérez, Luis E. |
| author_facet |
Osorio Vargas, Paula Campos, Cristian H. Torres, Cecilia C. Herrera, Carla Shanmugaraj, Krishnamoorthy Bustamante, Tatiana M. Diaz de Leon, J. N. Medina, Francisco Arteaga-Pérez, Luis E. |
| author_sort |
Osorio Vargas, Paula |
| title |
Catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: Reaction pathways |
| title_short |
Catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: Reaction pathways |
| title_full |
Catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: Reaction pathways |
| title_fullStr |
Catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: Reaction pathways |
| title_full_unstemmed |
Catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: Reaction pathways |
| title_sort |
catalytic pyrolysis of used tires on noble-metal-based catalysts to obtain high-value chemicals: reaction pathways |
| publishDate |
2022 |
| url |
http://sedici.unlp.edu.ar/handle/10915/154475 |
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