dc.creator | Rodríguez Gómez, Alberto | es |
dc.creator | Pereñíguez Rodríguez, Rosa María | es |
dc.creator | Caballero Martínez, Alfonso | es |
dc.date.accessioned | 2022-10-25T10:58:22Z | |
dc.date.available | 2022-10-25T10:58:22Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Rodríguez Gómez, A., Pereñíguez Rodríguez, R.M. y Caballero Martínez, A. (2018). Nickel Particles Selectively Confined in the Mesoporous Channels of SBA-15 Yielding a Very Stable Catalyst for DRM Reaction. Journal of Physical Chemistry B, 122 (2), 500-510. https://doi.org/10.1021/acs.jpcb.7b03835. | |
dc.identifier.issn | 1520-6106 | es |
dc.identifier.issn | 1520-5207 | es |
dc.identifier.uri | https://hdl.handle.net/11441/138304 | |
dc.description.abstract | A series of four Ni catalysts supported on SBA-15 and on a high SiO2
surface area have been prepared by modified impregnation (ImU) and deposition−
precipitation (DP) methods. The catalysts have been extensively characterized,
including in situ XAS (bulk sensitive) and XPS (surface sensitive) techniques, and
their catalytic activities evaluated in the dry reforming reaction of methane (DRM).
The combined use of XPS and XAS has allowed us to determine the location of nickel
particles on each catalyst after reduction at high temperature (750 °C). Both Ni/
SiO2-DP and Ni/SBA-15-DP catalysts yield well-dispersed and homogeneous metallic
phases mainly located in the mesoporosity of both supports. On the contrary, the Ni/
SiO2-ImU and Ni/SBA-15-ImU catalysts present a bimodal distribution of the
reduced nickel phase, with nickel metallic particles located out and into the
mesoporous structure of SiO2 or the SBA-15 channels. The Ni/SBA-15-DP catalyst
was found the most stable and performing system, with a very low level of carbon
deposition, about an order of magnitude lower than the equivalent ImU catalyst. This outstanding performance comes from the
confinement of small and homogeneous nickel particles in the mesoporous channels of SBA-15, which, in strong interaction with
the support, are resistant to sintering and coke deposition during the demanding reaction conditions of DRM. | es |
dc.description.sponsorship | Ministerio de Economía y Competitividad de España y fondos FEDER de la Unión Europea-ENE2011-24412 y CTQ2014-60524-R | es |
dc.format | application/pdf | es |
dc.format.extent | 11 p. | es |
dc.language.iso | eng | es |
dc.publisher | American Chemical Society | es |
dc.relation.ispartof | Journal of Physical Chemistry B, 122 (2), 500-510. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Nickel Particles Selectively Confined in the Mesoporous Channels of SBA-15 Yielding a Very Stable Catalyst for DRM Reaction | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Química Inorgánica | es |
dc.relation.projectID | ENE2011-24412 | es |
dc.relation.projectID | CTQ2014-60524-R | es |
dc.relation.publisherversion | https://doi.org/10.1021/acs.jpcb.7b03835 | es |
dc.identifier.doi | 10.1021/acs.jpcb.7b03835 | es |
dc.journaltitle | Journal of Physical Chemistry B | es |
dc.publication.volumen | 122 | es |
dc.publication.issue | 2 | es |
dc.publication.initialPage | 500 | es |
dc.publication.endPage | 510 | es |
dc.contributor.funder | Ministerio de Economía y Competitividad (MINECO). España | es |
dc.contributor.funder | European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) | es |