Facile synthesis of an Ni/LaAlO3 - perovskite via an MOF gel precursor for the dry reforming of methane

Muñoz Alvear, Helir Joseph; Korili, Sophia A.; Gil Bravo, Antonio

Facile synthesis of an Ni/LaAlO3 - perovskite via an MOF gel precursor for the dry reforming of methane

dc.contributor.author	Muñoz Alvear, Helir Joseph
dc.contributor.author	Korili, Sophia A.
dc.contributor.author	Gil Bravo, Antonio
dc.contributor.department	Ciencias	es_ES
dc.contributor.department	Zientziak	eu
dc.contributor.department	Institute for Advanced Materials and Mathematics - INAMAT2	en
dc.date.accessioned	2024-05-29T10:19:33Z
dc.date.available	2024-05-29T10:19:33Z
dc.date.issued	2024
dc.date.updated	2024-05-29T09:59:02Z
dc.description.abstract	A simple strategy to prepare the pure perovskite phase of lanthanum aluminate (LaAlO3) by calcination of a highly porous, dry MOF precursor gel has been developed. This study demonstrates that the structural and textural properties, such as specific surface area, pore volumes and pore sizes, of precursor-like metal-organic gels (MOG) (MOG-Al-La) based on metal-organic framework (MOF) structures can be modulated by optimizing the solvothermal treatment time. The perovskite obtained after solvothermal treatment at 120º C for 12 h and calcination at 750º C maintained the mesoporous characteristics of the MOF precursor, with a small particle size due to the decrease in crystallization temperature. These properties in the support allowed a good dispersion of the active Ni sites, low reducibility, and a strong interaction between them and the support, thus suppressing sintering under the severe catalytic reaction conditions evaluated (GHSV = 120,000 cm3/g-h) for the dry reforming of methane. The resulting MOX-(12 h)-LaAlO3-750-Ni catalyst gave a CH4 average conversion of 75% and CO2 average conversion of 80% after 20 h of reaction. The improved stability of the catalyst was attributed to suppression of the formation of the dense network of carbon filaments that can stress and subsequently fracture the support, cause attrition of the catalyst granules and hinder diffusion of the reactants both through the pores of the support and the interparticle spaces.	en
dc.description.sponsorship	The authors are grateful for financial support from the Spanish Ministry of Science and Innovation (MCIN/AEI/10.13039/501100011033) through project PID2020-112656RBC21. HJM thanks the Universidad Pública de Navarra for a doctoral grant.	en
dc.format.mimetype	application/pdf	en
dc.format.mimetype	application/msword	en
dc.identifier.citation	Munoz, H. J., Korili, S. A., Gil, A. (2024) Facile synthesis of an Ni/LaAlO3 - Perovskite via an MOF gel precursor for the dry reforming of methane. Catalysis Today, 429, 1-19. https://doi.org/10.1016/j.cattod.2023.114487.	es_ES
dc.identifier.doi	10.1016/j.cattod.2023.114487
dc.identifier.issn	0920-5861
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/48234
dc.language.iso	eng	en
dc.publisher	Elsevier	en
dc.relation.ispartof	Catalysis Today (2024), vol. 429(1), 114487	es_ES
dc.relation.projectID	info:eu-repo/grantAgreement///PID2020-112656RBC21/
dc.relation.publisherversion	https://doi.org/10.1016/j.cattod.2023.114487
dc.rights	© 2024 The Authors. This is an open access article under the CC BY-NC-ND license.	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/
dc.subject	Perovskite	en
dc.subject	Lanthanum aluminate	en
dc.subject	Metal-organic framework	en
dc.subject	Supramolecular gel	en
dc.subject	Methane dry reforming	en
dc.title	Facile synthesis of an Ni/LaAlO3 - perovskite via an MOF gel precursor for the dry reforming of methane	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
dspace.entity.type	Publication
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