Autor según el artículo: Szenti I; Efremova A; Kiss J; Sápi A; Óvári L; Halasi G; Haselmann U; Zhang Z; Morales-Vidal J; Baán K; Kukovecz Á; López N; Kónya Z
Departamento: Altres organs de gestió
Autor/es de la URV: Morales Vidal, Jordi
Palabras clave: Rwgs Pt/mno interface Manganese oxide Low co stability Edge dislocations
Resumen: The implementation of supported metal catalysts heavily relies on the synergistic interactions between metal nanoparticles and the material they are dispersed on. It is clear that interfacial perimeter sites have outstanding skills for turning catalytic reactions over, however, high activity and selectivity of the designed interface-induced metal distortion can also obtain catalysts for the most crucial industrial processes as evidenced in this paper. Herein, the beneficial synergy established between designed Pt nanoparticles and MnO in the course of the reverse water gas shift (RWGS) reaction resulted in a Pt/MnO catalyst having ~10 times higher activity compared to the reference Pt/SBA-15 catalyst with >99% CO selectivity. Under activation, a crystal assembly through the metallic Pt (110) and MnO evolved, where the plane distance differences caused a mismatched row structure in softer Pt nanoparticles, which was identified by microscopic and surface-sensitive spectroscopic characterizations combined with density functional theory simulations. The generated edge dislocations caused the Pt lattice expansion which led to the weakening of the Pt-CO bond. Even though MnO also exhibited an adverse effect on Pt by lowering the number of exposed metal sites, rapid desorption of the linearly adsorbed CO species governed the performance of the Pt/MnO in the RWGS.© 2023 Wiley-VCH GmbH.
Áreas temáticas: Química Medicina ii Medicina i Materiais Interdisciplinar General medicine General chemistry Farmacia Engenharias ii Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Chemistry Catalysis Astronomia / física
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: jordi.morales@estudiants.urv.cat
Fecha de alta del registro: 2024-03-09
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://onlinelibrary.wiley.com/doi/10.1002/anie.202317343
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Angewandte Chemie (International Ed. Print). 63 (8): e202317343-e202317343
Referencia de l'ítem segons les normes APA: Szenti I; Efremova A; Kiss J; Sápi A; Óvári L; Halasi G; Haselmann U; Zhang Z; Morales-Vidal J; Baán K; Kukovecz Á; López N; Kónya Z (2024). Pt/MnO Interface Induced Defects for High Reverse Water Gas Shift Activity. Angewandte Chemie (International Ed. Print), 63(8), e202317343-e202317343. DOI: 10.1002/anie.202317343
DOI del artículo: 10.1002/anie.202317343
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2024
Tipo de publicación: Journal Publications
Repositori URV