Publicación:
TUNING THE PRODUCT DISTRIBUTION DURING THE CATALYTIC PYROLYSIS OF WASTE TIRES: THE EFFECT OF THE NATURE OF METALS AND THE REACTION TEMPERATURE

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dc.creatorTAMARA ALEJANDRA MENARES TAPIA
dc.creatorLUIS ERNESTO ARTEAGA PÉREZ
dc.date2021
dc.date.accessioned2025-01-10T15:21:56Z
dc.date.available2025-01-10T15:21:56Z
dc.date.issued2021
dc.description.abstractMETAL 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 CCSINGLE BOND 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.,
dc.formatapplication/pdf
dc.identifier.doi10.1016/j.cattod.2020.10.035
dc.identifier.issn1873-4308
dc.identifier.issn0920-5861
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/11669
dc.languagespa
dc.publisherCATALYSIS TODAY
dc.relation.uri10.1016/j.cattod.2020.10.035
dc.rightsPUBLICADA
dc.titleTUNING THE PRODUCT DISTRIBUTION DURING THE CATALYTIC PYROLYSIS OF WASTE TIRES: THE EFFECT OF THE NATURE OF METALS AND THE REACTION TEMPERATURE
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionESCUELA DE INGENIERIA CIVIL QUIMICA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
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