Influence of chemical surface characteristics of ammonium-modified chilean zeolite on oak catalytic pyrolysis

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datacite.alternateIdentifier.citationCatalysts, 9 (5), 2019
datacite.alternateIdentifier.doi10.3390/catal9050465
datacite.alternateIdentifier.issn2073-4344
datacite.creatorAlejandro-Martín, Serguei
datacite.creatorAcaricia, Adán Montecinos
datacite.creatorCerda-Barrera, Cristian
datacite.creatorPérez, Hatier Díaz
datacite.date2019
datacite.rightsAcceso abierto
datacite.subjectBio-oil Upgrade
datacite.subjectBrønsted Acid Sites
datacite.subjectCatalytic Pyrolysis
datacite.subjectChilean Natural Zeolite
datacite.titleInfluence of chemical surface characteristics of ammonium-modified chilean zeolite on oak catalytic pyrolysis
dc.description.abstractThe influence of chemical surface characteristics of Chilean natural and modified zeolites on Chilean Oak catalytic pyrolysis was investigated in this study. Chilean zeolite samples were characterised by nitrogen absorption at 77 K, X-ray powder diffraction (XRD), and X-ray fluorescence (XRF). The nature and strength of zeolite acid sites were studied by diffuse reflectance infrared Fourier transform (DRIFT), using pyridine as a probe molecule. Experimental pyrolysis was conducted in a quartz cylindrical reactor and bio-oils were obtained by condensation of vapours in a closed container. Chemical species in bio-oil samples were identified by a gas chromatography/mass spectrophotometry (GC/MS) analytical procedure. Results indicate that after the ionic exchange treatment, an increase of the Brønsted acid site density and strength was observed in ammonium-modified zeolites. Brønsted acids sites were associated with an increment of the composition of ketones, aldehydes, and hydrocarbons and to a decrease in the composition of the following families (esters; ethers; and acids) in obtained bio-oil samples. The Brønsted acid sites on ammonium-modified zeolite samples are responsible for the upgraded bio-oil and value-added chemicals, obtained in this research. Bio-oil chemical composition was modified when the pyrolysis-derived compounds were upgraded over a 2NHZ zeolite sample, leading to a lower quantity of oxygenated compounds and a higher composition of value-added chemicals. © 2021 Elsevier B.V., All rights reserved.
dc.description.ia_keywordwere, modified, zeolite, chemical, chilean, pyrolysis, samples
dc.formatPDF
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/2880
dc.language.isoen
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.relationinstname: ANID
dc.relationreponame: Repositorio Digital RI2.0
dc.rights.driverinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.sourceCatalysts
dc.subject.ia_oecd1nCiencias Naturales
dc.subject.ia_oecd2nCiencias Biológicas
dc.subject.ia_oecd3nEcología
dc.type.driverinfo:eu-repo/semantics/article
dc.type.driverhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.type.openaireinfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
oaire.citationEdition2019
oaire.citationIssue5
oaire.citationTitleCatalysts
oaire.citationVolume9
oaire.fundingReferenceANID FONDECYT 11140781 (Regular)
oaire.fundingReferenceANID FONDEQUIP 170077
oaire.fundingReferenceUBB NanoCatpPS
oaire.fundingReferenceUBB Concepción.
oaire.licenseConditionObra bajo licencia Creative Commons Atribución 4.0 Internacional
oaire.licenseCondition.urihttps://creativecommons.org/licenses/by/4.0/
oaire.resourceTypeArtículo
oaire.resourceType.enArticle
uct.catalogadorjvu
uct.comunidadIngenieríaen_US
uct.departamentoDepartamento Procesos Industriales
uct.facultadFacultad de Ingeniería
uct.indizacionScience Citation Index Expanded - SCIE
uct.indizacionScopus
uct.indizacionEi Compendex
uct.indizacionDOAJ
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