Determination of hazardous vapors from the thermal decomposition of organochlorinated silica xerogels with adsorptive properties

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dc.contributor.authorRosales Reina, María Beatriz
dc.contributor.authorCruz Quesada, Guillermo
dc.contributor.authorPujol, Pablo
dc.contributor.authorReinoso, Santiago
dc.contributor.authorElosúa Aguado, César
dc.contributor.authorArzamendi Manterola, Gurutze
dc.contributor.authorLópez Ramón, María Victoria
dc.contributor.authorGarrido Segovia, Julián José
dc.contributor.departmentCienciases_ES
dc.contributor.departmentZientziakeu
dc.contributor.departmentInstitute for Advanced Materials and Mathematics - INAMAT2en
dc.contributor.departmentIngeniería Eléctrica, Electrónica y de Comunicaciónes_ES
dc.contributor.departmentIngeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritzaeu
dc.contributor.departmentInstitute of Smart Cities - ISCen
dc.date.accessioned2024-09-18T15:52:23Z
dc.date.available2024-09-18T15:52:23Z
dc.date.issued2024
dc.date.updated2024-09-18T15:35:09Z
dc.description.abstractThe incorporation of organic groups into sol-gel silica materials is known to have a noticeable impact on the properties and structure of the resulting xerogels due to the combination of the properties inherent to the organic fragments (functionality and flexibility) with the mechanical and structural stability of the inorganic matrix. However, the reduction of the inorganic content in the materials could be detrimental to their thermal stability properties, limiting the range of their potential applications. Therefore, this work aims to evaluate the thermal stability of hybrid inorganic-organic silica xerogels prepared from mixtures of tetraethoxysilane and organochlorinated triethoxysilane precursors. To this end, a series of four materials with a molar percentage of organochlorinated precursor fixed at 10%, but differing in the type of organic group (chloroalkyls varying in the alkyl-chain length and chlorophenyl), has been selected as model case study. The gases and vapors released during the thermal decomposition of the samples under N2 atmosphere have been analyzed and their components determined and quantified using a thermogravimetric analyzer coupled to a Fourier-transform infrared spectrophotometer and to a gas chromatography-mass spectrometry unit. These analyses have allowed to identify up to three different thermal events for the pyrolysis of the organochlorinated xerogel materials and to elucidate the reaction pathways associated with such processes. These mechanisms have been found to be strongly dependent on the specific nature of the organic group.en
dc.description.sponsorshipThis work was supported by the projects PID2020-113558RB-C42, PID2022-137437OB-I00 and PID2022-142169OB-I00, financed by MCIN/AEI/10.13039/501100011033
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRosales-Reina, B., Cruz-Quesada, G., Pujol, P., Reinoso, S., Elosúa, C., Arzamendi, G., López-Ramón, M. V., Garrido, J. J. (2024) Determination of hazardous vapors from the thermal decomposition of organochlorinated silica xerogels with adsorptive properties. Environmental Research, 256, 1-11. https://doi.org/10.1016/j.envres.2024.119247.
dc.identifier.doi10.1016/j.envres.2024.119247
dc.identifier.issn0013-9351
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/51655
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofEnvironmental Research 256, 2024, 119247
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113558RB-C42/ES/
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-137437OB-I00/ES/
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-142169OB-I00/ES/
dc.relation.publisherversionhttps://doi.org/10.1016/j.envres.2024.119247
dc.rights© 2024 The Authors. This is an open access article under the CC BY-NC-ND license.
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAdsorptionen
dc.subjectDecomposition mechanismsen
dc.subjectFourier-transform infrared spectroscopyen
dc.subjectGas chromatography-mass spectrometryen
dc.subjectHybrid silica xerogelen
dc.subjectThermal decompositionen
dc.titleDetermination of hazardous vapors from the thermal decomposition of organochlorinated silica xerogels with adsorptive propertiesen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
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relation.isAuthorOfPublication93ef1ad3-369a-4450-a3a4-1705e61480a7
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relation.isAuthorOfPublication.latestForDiscovery93ef1ad3-369a-4450-a3a4-1705e61480a7

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