dc.creator | Roudane, Sarra | es |
dc.creator | Bettahar, Noureddin | es |
dc.creator | Caballero Martínez, Alfonso | es |
dc.creator | Holgado, Juan Pedro | es |
dc.date.accessioned | 2024-05-09T13:50:12Z | |
dc.date.available | 2024-05-09T13:50:12Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Roudane, S., Bettahar, N., Caballero Martínez, A. y Holgado, J.P. (2023). Methanation of CO2 over High Surface Nickel/Aluminates Compounds Prepared by a Self-Generated Carbon Template. Catalysts, 13 (1), 142. https://doi.org/10.3390/catal13010142. | |
dc.identifier.issn | 2073-4344 | es |
dc.identifier.uri | https://hdl.handle.net/11441/158009 | |
dc.description.abstract | Catalytic gas-phase hydrogenation of CO2 into CH4 was tested under three different nickel/aluminate catalysts obtained from precursors of hexaaluminate composition (MAl16O19, M = Mg, Ca, Ba). These catalysts were prepared using a carbon template method, where carbon is self-generated from a sol-gel that contains an excess of citric acid and the Al and M salts (Ba2+, Ca2+, Mg2+) by two-step calcination in an inert/oxidizing atmosphere. This procedure yielded Ni particles decorating the surface of a porous high surface area matrix, which presents a typical XRD pattern of aluminate structure. Ni particles are obtained with a homogeneous distribution over the surface and an average diameter of ca 25–30 nm. Obtained materials exhibit a high conversion of CO2 below 500 °C, yielding CH4 as a final product with selectivity >95%. The observed trend with the alkaline earth cation follows the order NiBaAlO-PRx > NiCaAlO-PRx > NiMgAlO-PRx. We propose that the high performance of the NiBaAlO sample is derived from both an appropriate distribution of Ni particle size and the presence of BaCO3, acting as a CO2 buffer in the process. | es |
dc.description.sponsorship | Junta de Andalucía PID2020-119946RB-I00, ENE2017-88818-C2-1-R | es |
dc.format | application/pdf | es |
dc.format.extent | 18 p. | es |
dc.language.iso | eng | es |
dc.publisher | Multidisciplinary Digital Publishing Institute (MDPI) | es |
dc.relation.ispartof | Catalysts, 13 (1), 142. | |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | Carbon dioxide depletion | es |
dc.subject | Heterogeneous catalysts | es |
dc.subject | Methanation | es |
dc.subject | Nickel nanoparticles | es |
dc.subject | Sabatier reaction | es |
dc.title | Methanation of CO2 over High Surface Nickel/Aluminates Compounds Prepared by a Self-Generated Carbon Template | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Química Inorgánica | es |
dc.relation.projectID | PID2020-119946RB-I00 | es |
dc.relation.projectID | ENE2017-88818-C2-1-R | es |
dc.relation.publisherversion | https://doi.org/10.3390/catal13010142 | es |
dc.identifier.doi | 10.3390/catal13010142 | es |
dc.journaltitle | Catalysts | es |
dc.publication.volumen | 13 | es |
dc.publication.issue | 1 | es |
dc.publication.initialPage | 142 | es |
dc.contributor.funder | Junta de Andalucía | es |