Phenyl siloxane hybrid xerogels: structure and porous texture

This is a post-peer-review, pre-copyedit version of an article published in Adsorption. The final authenticated version is available online at: https://doi.org/10.1007/s10450-019-00075-9

Detalles Bibliográficos
Autores: Moriones Jiménez, Paula, Echeverría Morrás, Jesús, Parra, Bernardo, Garrido Segovia, Julián José
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/35316
Acceso en línea:https://hdl.handle.net/2454/35316
Access Level:acceso abierto
Palabra clave:Sol–gel
Phenyltriethoxysilane
Hybrid xerogels
Porous texture
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spelling Phenyl siloxane hybrid xerogels: structure and porous textureMoriones Jiménez, PaulaEcheverría Morrás, JesúsParra, BernardoGarrido Segovia, Julián JoséSol–gelPhenyltriethoxysilaneHybrid xerogelsPorous textureThis is a post-peer-review, pre-copyedit version of an article published in Adsorption. The final authenticated version is available online at: https://doi.org/10.1007/s10450-019-00075-9The aim of this research is to investigate the effect of phenyltriethoxysilane (PhTEOS) and tetraethoxysilane (TEOS) molar ratios as silicon precursors on the structure and porous texture of xerogels. We have prepared phenyl-silane hybrid xerogels from mixtures of PhTEOS and TEOS at pH 10 and 333 K, using ethanol as a solvent. Characterization techniques include 29Si NMR, FTIR, XRD, FE-SEM, HRTEM, TGA-DSC, helium density, and gas adsorption (N2 at 77 K and CO2 at 273 K). In order to assess the contribution of the quadrupolar moment of N2 and CO2 in the adsorption we obtained the adsorption– desorption isotherm of Ar at 87.3 K for the xerogel synthesized from 50% PhTEOS. The morphology of xerogels changed from aggregates of spherical particles for 20% PhTEOS to lamellae for samples obtained with PhTEOS percentages equal or larger that 60%. The incorporation of phenyl groups into the xerogel matrix caused an increase in the spacing bond between silicon atoms and led to an intramolecular reaction and the formation of lamellar domains. Increasing the PhTEOS molar ratio in the mixture of silicon precursors produced hybrid xerogels with lower specific surface area, pore volume and characteristic energy. The similarity between the isotherms of N2 at 77 K and Ar at 87.3 K indicates that the main retention mechanism is physisorption and that the variation in the surface chemistry with the incorporation of phenyl groups doesn’t inhibit the retention of N2.This work was backed by the Ministerio de Ciencia y Tecnología (Grant No. CTQ2009-07993) and by the Ministerio de Economía, Industria y Competitividad (Grant No. MAT2016-78155-C2-2-R). Paula Moriones is grateful to the Departamento de Industria y Tecnología, Comercio y Trabajo of the Navarre Government for the fellowships granted (Ref. Number 175/01/08 and 269/01/08, respectively).Springer USZientziakInstitute for Advanced Materials and Mathematics - INAMAT2CienciasGobierno de Navarra / Nafarroako Gobernua2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/ziphttps://hdl.handle.net/2454/35316reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/ES/1PE/MAT2016-78155© Springer Science+Business Media, LLC, part of Springer Nature 2019info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/353162026-06-17T12:41:47Z
dc.title.none.fl_str_mv Phenyl siloxane hybrid xerogels: structure and porous texture
title Phenyl siloxane hybrid xerogels: structure and porous texture
spellingShingle Phenyl siloxane hybrid xerogels: structure and porous texture
Moriones Jiménez, Paula
Sol–gel
Phenyltriethoxysilane
Hybrid xerogels
Porous texture
title_short Phenyl siloxane hybrid xerogels: structure and porous texture
title_full Phenyl siloxane hybrid xerogels: structure and porous texture
title_fullStr Phenyl siloxane hybrid xerogels: structure and porous texture
title_full_unstemmed Phenyl siloxane hybrid xerogels: structure and porous texture
title_sort Phenyl siloxane hybrid xerogels: structure and porous texture
dc.creator.none.fl_str_mv Moriones Jiménez, Paula
Echeverría Morrás, Jesús
Parra, Bernardo
Garrido Segovia, Julián José
author Moriones Jiménez, Paula
author_facet Moriones Jiménez, Paula
Echeverría Morrás, Jesús
Parra, Bernardo
Garrido Segovia, Julián José
author_role author
author2 Echeverría Morrás, Jesús
Parra, Bernardo
Garrido Segovia, Julián José
author2_role author
author
author
dc.contributor.none.fl_str_mv Zientziak
Institute for Advanced Materials and Mathematics - INAMAT2
Ciencias
Gobierno de Navarra / Nafarroako Gobernua
dc.subject.none.fl_str_mv Sol–gel
Phenyltriethoxysilane
Hybrid xerogels
Porous texture
topic Sol–gel
Phenyltriethoxysilane
Hybrid xerogels
Porous texture
description This is a post-peer-review, pre-copyedit version of an article published in Adsorption. The final authenticated version is available online at: https://doi.org/10.1007/s10450-019-00075-9
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/35316
url https://hdl.handle.net/2454/35316
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/ES/1PE/MAT2016-78155
dc.rights.none.fl_str_mv © Springer Science+Business Media, LLC, part of Springer Nature 2019
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © Springer Science+Business Media, LLC, part of Springer Nature 2019
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/zip
dc.publisher.none.fl_str_mv Springer US
publisher.none.fl_str_mv Springer US
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instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
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repository.mail.fl_str_mv
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