Modification of Natural and Synthetic Zeolites for CO2 Capture: Unrevealing the Role of the Compensation Cations

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datacite.alternateIdentifier.citationMaterials, 18 (10), 2025
datacite.alternateIdentifier.doi10.3390/ma18102403
datacite.alternateIdentifier.issn1996-1944
datacite.creatorAbreu, Norberto José
datacite.creatorJaramillo, Andrés Felipe
datacite.creatorBecker-Garcés, Daniel F.A.
datacite.creatorAntileo, Christian
datacite.creatorMartínez-Retureta, Rebeca
datacite.creatorMartínez-Ruano, Jimmy Anderson
datacite.creatorÑanculeo, Jaime
datacite.creatorPérez, Matías M.
datacite.creatorCea, Mara
datacite.date2025
datacite.rightsAcceso abierto
datacite.subjectCarbon Capture And Storage
datacite.subjectCo2 Adsorption
datacite.subjectIon Exchange
datacite.subjectIsotherm Modelling
datacite.subjectZeolite
datacite.subjectAdsorption Isotherms
datacite.subjectIon Exchange
datacite.subjectMetal Analysis
datacite.subjectPhysisorption
datacite.subjectAdsorption Capacities
datacite.subjectCo 2 Uptake
datacite.subjectCo2 Adsorption
datacite.subjectGas Analysers
datacite.subjectGas Analyzers
datacite.subjectIsotherm Modeling
datacite.subjectNatural Zeolites
datacite.subjectNitrogen Adsorption
datacite.subjectSem-eds
datacite.subjectSynthetic Zeolites
datacite.subjectGas Adsorption
datacite.titleModification of Natural and Synthetic Zeolites for CO2 Capture: Unrevealing the Role of the Compensation Cations
dc.date.accessioned2025-10-06T14:22:00Z
dc.date.available2025-10-06T14:22:00Z
dc.description.abstractThe development of highly effective natural-based adsorbents to face the increasing rates of CO<inf>2</inf> production and their delivery to the atmosphere are a big concern nowadays. For such purposes, synthetic and natural zeolites were modified via an ion exchange procedure to enhance the CO<inf>2</inf> uptake. Samples were characterized by SEM, EDS, TGA and nitrogen adsorption at 77 K, showing the correct incorporation of the new metals; in addition, the CO<inf>2</inf> adsorption isotherms were determined using a gas analyser. During the first stage, the role of the compensation cations for CO<inf>2</inf> adsorption was assessed by modifying a pure ZSM-5 synthetic zeolite with different metal precursors present in salt solutions via an ion exchange procedure. Then, five samples were studied; the samples modified with bivalent cation precursors (Zn2+ and Cu2+) presented a higher adsorption uptake than those modified with a monovalent cation (Na+ and K+). Specifically, the substitution of the compensation cations for Cu2+ increased the CO<inf>2</inf> capture uptake without affecting the surface properties of the zeolite. The results depict the prevalence of ?-cation interactions enhanced by the field gradient induced by divalent cations and their lower ionic radii, if compared to monovalent ones. Subsequently, a natural zeolite was modified considering the best results of the previous phase. This Surface Response Methodology was implemented considering 11 samples by varying the concentration of the copper precursor and the time of the ion exchange procedure. A quantitative quadratic model to predict the adsorption uptake with an R2 of 0.92 was obtained. The results depicted the optimal conditions to modify the used natural zeolite for CO<inf>2</inf> capture. The modification procedure implemented increased the CO<inf>2</inf> adsorption capacity of the natural zeolite more than 20%, reaching an adsorption capacity of 75.8 mg CO<inf>2</inf>/g zeolite. © 2025 Elsevier B.V., All rights reserved.
dc.description.ia_keywordadsorption, natural, zeolite, were, modified, procedure, uptake
dc.formatPDF
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/6903
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.sourceMaterials
dc.subject.ia_oecd1nCiencias Naturales
dc.subject.ia_oecd2nCiencias Físicas
dc.subject.ia_oecd3nCiencias de la Tierra y Medioambientales
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.citationEdition2025
oaire.citationIssue10
oaire.citationTitleMaterials
oaire.citationVolume18
oaire.fundingReferenceANID FONDECYT POSTDOCTORADO 3210158
oaire.fundingReferenceANID FONDECYT INICIACIÓN 11250677
oaire.fundingReferenceANID FONDECYT REGULAR 1231376, 1231242
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.comunidadRecursos Naturalesen_US
uct.departamentoDepartamento de Ciencias Ambientales
uct.facultadFacultad de Recursos Naturales
uct.indizacionScience Citation Index Expanded - SCIE
uct.indizacionScopus
uct.indizacionEi Compendex
uct.indizacionInspec
uct.indizacionPubMed Central (PMC)
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