Show simple item record

dc.contributor.author Aspromonte, Soledad Guadalupe
dc.contributor.author Sastre, Alvaro
dc.contributor.author Boix, Alicia Viviana
dc.contributor.author Cocero, María José
dc.contributor.author Alonso, Esther
dc.date.available 2018-07-25T00:53:36Z
dc.date.issued 2012-01
dc.identifier.citation Aspromonte, Soledad Guadalupe; Sastre, Alvaro; Boix, Alicia Viviana; Cocero, María José; Alonso, Esther; Cobalt nanoparticles on mesoporous MCM-41 and Al-MCM-41 by Supercritical CO2 Deposition; Elsevier Science; Microporous and Mesoporous Materials; 148; 1-2012; 53-61
dc.identifier.issn 1387-1811
dc.identifier.uri http://hdl.handle.net/11336/53047
dc.description.abstract CoO and Co3O4 nanoparticles were uniformly dispersed inside mesoporous MCM-41 and Al-MCM-41 supports using supercritical CO2 reactive deposition. This method represents a one-pot reproducible procedure that allows the dissolution of the organocobalt precursor and supports impregnation in supercritical CO2 at 70 °C and 110 bar, followed by the precursor thermal decomposition into cobalt species at 200 °C and 160 bar. By the relative concentration of the cobalt precursor [cobalt (II) bis (η5-ciclopentadienil)], the load of cobalt nanoparticles was controlled and then determined by Inductively Coupled Plasma (ICP-OES). The synthesis of CoO and Co3O4 species inside the MCM-41 and Al-MCM-41 substrates was confirmed by X-ray Photoelectron (XPS) and Laser Raman Spectroscopies (LRS). By N2 adsorption and Small Angle X-ray Scattering (SAXS), it was determined that the hexagonal arrangement as well as the surface area and pore size of the substrates changed after the addition of cobalt. By means of X-ray mapping from SEM images, a homogeneous distribution of cobalt nanoparticles was observed inside the mesopores when the cobalt loading was 1 wt.%. In addition, spherical cobalt nanoparticles of average diameter close to 20 nm were detected on the outer surface of MCM-41 and Al-MCM-41 supports when the cobalt content was higher. On the other hand, by Transmission Electron Microscopy (TEM), it was possible to measure the interplanar distance of the crystalline plane of the outer nanoparticles, which was later compared with the theoretical distance values which allowed identifying the CoO and Co3O4 phases.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier Science
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject Supercritical CO2
dc.subject Cobalt oxide nanoparticles
dc.subject MCM-41
dc.subject Al-MCM-41 and Mesoporous supports
dc.subject.classification Otras Ciencias Químicas
dc.subject.classification Ciencias Químicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Cobalt nanoparticles on mesoporous MCM-41 and Al-MCM-41 by Supercritical CO2 Deposition
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-07-20T14:18:03Z
dc.journal.volume 148
dc.journal.pagination 53-61
dc.journal.pais Países Bajos
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Aspromonte, Soledad Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
dc.description.fil Fil: Sastre, Alvaro. Universidad de Valladolid; España
dc.description.fil Fil: Boix, Alicia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
dc.description.fil Fil: Cocero, María José. Universidad de Valladolid; España
dc.description.fil Fil: Alonso, Esther. Universidad de Valladolid; España
dc.journal.title Microporous and Mesoporous Materials
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science?_ob=MiamiImageURL&_cid=271888&_user=3602825&_pii=S1387181111003295&_check=y&_origin=search&_zone=rslt_list_item&_coverDate=2012-01-15&wchp=dGLzVlk-zSkWz&md5=342b1a543f4ddde1d37e9ef372b9beed/1-s2.0-S1387181111003295-mai
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.micromeso.2011.07.014
dc.conicet.fuente unificacion


Archivos asociados

Icon
Blocked Acceso no disponible

This item appears in the following Collection(s)

  • Articulos(INCAPE) [607]
    Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"

Show simple item record

info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)