Publication: A comparative study of the catalytic performance of nickel supported on a hibonite-type La-hexaaluminate synthesized from aluminum saline slags in the dry reforming of methane
| dc.contributor.author | Torrez Herrera, Jonathan Josué | |
| dc.contributor.author | Korili, Sophia A. | |
| dc.contributor.author | Gil Bravo, Antonio | |
| dc.contributor.department | Zientziak | eu |
| dc.contributor.department | Institute for Advanced Materials and Mathematics - INAMAT2 | en |
| dc.contributor.department | Ciencias | es_ES |
| dc.contributor.funder | Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa | es |
| dc.date.accessioned | 2022-11-10T14:42:03Z | |
| dc.date.available | 2022-11-10T14:42:03Z | |
| dc.date.issued | 2022 | |
| dc.date.updated | 2022-11-10T12:41:51Z | |
| dc.description.abstract | In this work, a hibonite-type Ni/La-hexaaluminate (Ni/LHA) synthesized from an industrial waste is used and compared as catalyst in the dry reforming of methane (DRM) at 973 K. The structure, catalytic behavior, and stability during a run time of at least 50 h of three Nicatalysts obtained from two commercial supports and two preparation methods were used for comparison. An aluminum solution (9.40 g/L) obtained from an aluminum saline slag waste by acid extraction was used to synthesize the hexaaluminate by mixing with a stoichiometric amount of lanthanum nitrate and methanol/Peg400/PegMn400 under hydrothermal conditions at 493 K for 16 h. The Ni/LHA catalyst (10 wt% NiO) was obtained by impregnation of the synthesized support, calcined previously at 1473 K for 2 h. The resulting solids were characterized by several techniques as: X-ray diffraction (XRD), N2 adsorption at 77 K, temperature-programmed reduction (TPR), scanning electron microscopy (SEM) and transmission electron microscopy (HR-TEM). In order to compare the catalytic behavior and properties of the Ni/LHA catalyst, three Ni catalysts obtained from two commercial supports (g-Al2O3 and SiO2) and two preparation methods (wet impregnation (I) and precipitation-deposition (PD)) were synthesized. Analysis of the TPR patterns for the catalysts allowed the type of metal support interaction and NiO species to be determined, with a weak interaction with the support being observed in Ni/LHA and NieI/ SiO2. The NiO species observed, with crystallite sizes between 9.7 and 40.4 nm, confirm the X-ray structural analyses. The Ni/LHA catalyst was found to be active and very stable in the DRM reaction after 50 h. The catalytic behavior was evaluated from the CO2 and CH4 conversions, as well as the H2/CO selectivity, with values of 99% over almost all the time range evaluated. The behavior of this catalyst is comparable to that of NieI/Al2O3 and NiPD/SiO2. The results found indicating that the strong interaction of nickel with the support favors the stability of the catalysts in the DRM reaction. | en |
| dc.description.sponsorship | The authors are grateful for financial support from the Spanish Ministry of Science and Innovation (MCIN/AdslEI/10.13039/501100011033) through project PID2020-112656RBC21. JJTH thanks Universidad Pública de Navarra for a postdoctoral grant. AG also thanks Santander Bank for funding via the Research Intensification Program. | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.citation | Torrez-Herrera, J. J., Korili, S. A., & Gil, A. (2022). A comparative study of the catalytic performance of nickel supported on a hibonite-type La-hexaaluminate synthesized from aluminum saline slags in the dry reforming of methane. International Journal of Hydrogen Energy, 47(93), 39678-39686. | en |
| dc.identifier.doi | 10.1016/j.ijhydene.2022.09.131 | |
| dc.identifier.issn | 0360-3199 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/44320 | |
| dc.language.iso | eng | en |
| dc.publisher | Elsevier | en |
| dc.relation.ispartof | International Journal of Hydrogen Energy 47 (2022), 39678-39686 | en |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112656RB-C21/ES/ | en |
| dc.relation.publisherversion | https://doi.org/10.1016/j.ijhydene.2022.09.131 | |
| dc.rights | © 2022 The Author(s). This is an open access article under the CC BY-NC-ND license | en |
| dc.rights.accessRights | Acceso abierto / Sarbide irekia | es |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | en |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Aluminum industrial waste valorization | en |
| dc.subject | Hexaaluminate synthesis from aluminum saline slags | en |
| dc.subject | Nickel supported hexaaluminate | en |
| dc.subject | Dry reforming of methane | en |
| dc.title | A comparative study of the catalytic performance of nickel supported on a hibonite-type La-hexaaluminate synthesized from aluminum saline slags in the dry reforming of methane | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | Versión publicada / Argitaratu den bertsioa | es |
| dc.type.version | info:eu-repo/semantics/publishedVersion | en |
| dspace.entity.type | Publication | |
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