Tuning the product distribution during the catalytic pyrolysis of waste tires : The effect of the nature of metals and the reaction temperature

Metal catalysts based on Ni, Co, and Pd supported on SiO2 were evaluated in the catalytic pyrolysis of waste tires using pyrolysis experiments coupled to gas chromatography/mass spectrometry (Py–GC/MS) and thermogravimetric analysis coupled with Fourier Transform Infrared spectrometer (TGA–FTIR) tec...

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Detalles Bibliográficos
Autores principales: Osorio Vargas, Paula, Menares, Tamara, Lick, Ileana Daniela, Casella, Mónica Laura, Romero, Romina, Jiménez, Romel, Arteaga Pérez, Luis E.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2020
Materias:
Química
Ciencias Exactas
catalytic pyrolysis
waste tires
high added-value products
BTX
supported metal catalysts
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/140872
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-140872
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Ciencias Exactas
catalytic pyrolysis
waste tires
high added-value products
BTX
supported metal catalysts
spellingShingle Química
Ciencias Exactas
catalytic pyrolysis
waste tires
high added-value products
BTX
supported metal catalysts
Osorio Vargas, Paula
Menares, Tamara
Lick, Ileana Daniela
Casella, Mónica Laura
Romero, Romina
Jiménez, Romel
Arteaga Pérez, Luis E.
Tuning the product distribution during the catalytic pyrolysis of waste tires : The effect of the nature of metals and the reaction temperature
topic_facet Química
Ciencias Exactas
catalytic pyrolysis
waste tires
high added-value products
BTX
supported metal catalysts
description Metal catalysts based on Ni, Co, and Pd supported on SiO2 were evaluated in the catalytic pyrolysis of waste tires using pyrolysis experiments coupled to gas chromatography/mass spectrometry (Py–GC/MS) and thermogravimetric analysis coupled with Fourier Transform Infrared spectrometer (TGA–FTIR) techniques. The effect of temperature and the nature of metals on the product distribution and reaction pathways was determined. Catalytic pyrolysis promoted aromatization and cracking reactions at particularly low temperatures ca. 350 °C, leading mainly to the formation of alkenes (isoprene), aromatic terpenes (p-cymene), aliphatic terpenes (d,l-limonene), and other aromatic compounds such as benzene, toluene, and xylenes (BTX). The Pd/SiO2 catalyst was the most selective toward aromatic compounds (around 40 %), owing to its well-known hydrogenation/dehydrogenation capacity, while CC bond cleavage reactions, leading to alkenes, were more favored on the Ni/SiO2 and Co/SiO2 catalysts. In all cases, high selectivity to limonene and isoprene was observed at low temperature. Above 400 °C, no significant differences in product distribution were observed between catalyzed and uncatalyzed pyrolysis. Herein, selectivity toward high-value hydrocarbons (i.e., d , l -limonene, isoprene, BTX, and p-cymene) during the catalytic pyrolysis of waste tires was tuned by the nature of the supported transition metals (i.e., Ni, Co, Pd) and the reaction temperature (e.g., <400 ºC). The results demonstrate that the use of these catalysts is a promising strategy to valorize waste tires into high added-value products.
format Articulo
Preprint
author Osorio Vargas, Paula
Menares, Tamara
Lick, Ileana Daniela
Casella, Mónica Laura
Romero, Romina
Jiménez, Romel
Arteaga Pérez, Luis E.
author_facet Osorio Vargas, Paula
Menares, Tamara
Lick, Ileana Daniela
Casella, Mónica Laura
Romero, Romina
Jiménez, Romel
Arteaga Pérez, Luis E.
author_sort Osorio Vargas, Paula
title Tuning the product distribution during the catalytic pyrolysis of waste tires : The effect of the nature of metals and the reaction temperature
title_short Tuning the product distribution during the catalytic pyrolysis of waste tires : The effect of the nature of metals and the reaction temperature
title_full Tuning the product distribution during the catalytic pyrolysis of waste tires : The effect of the nature of metals and the reaction temperature
title_fullStr Tuning the product distribution during the catalytic pyrolysis of waste tires : The effect of the nature of metals and the reaction temperature
title_full_unstemmed Tuning the product distribution during the catalytic pyrolysis of waste tires : The effect of the nature of metals and the reaction temperature
title_sort tuning the product distribution during the catalytic pyrolysis of waste tires : the effect of the nature of metals and the reaction temperature
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/140872
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