Autor segons l'article: Patarroyo, Javier; Delgado, Jorge A; Merkoci, Florind; Genc, Aziz; Sauthier, Guillaume; Llorca, Jordi; Arbiol, Jordi; Bastus, Neus G; Godard, Cyril; Claver, Carmen; Puntes, Victor
Departament: Química Física i Inorgànica
Autor/s de la URV: Claver Cabrero, Maria del Carmen Orosia / Godard, Cyril
Paraules clau: Semihydrogenation Selective hydrogenation Performance Nanostructures Nanoparticles Nanocatalysts Growth Gold Design Acetylene
Resum: In the present work, hollow PdAg-CeO2 heterodimer nanocrystals (NCs) were prepared and tested as catalysts for the selective hydrogenation of alkynes. These nanostructures combine for the first time the beneficial effect of alloying Pd with Ag in a single NC hollow domain with the formation of active sites at the interface with the CeO2 counterpart in an additive manner. The PdAg-CeO2 NCs display excellent alkene selectivity for aliphatic alkynes. For the specific case of hydrogenation of internal alkynes such as 4-octyne, very low over-hydrogenation and isomerization products were observed over a full conversion regime, even after prolonged reaction times. These catalytic properties were remarkably superior in comparison to standard catalysts. The promotion of Ag on the moderation of the reactivity of the Pd phase, in combination with the creation of interfacial sites with the CeO2 moiety in the same nanostructure, is pointed as the responsible of such a remarkable catalytic performance.
Àrees temàtiques: Zootecnia / recursos pesqueiros Saúde coletiva Química Psicología Odontología Nutrição Multidisciplinary sciences Multidisciplinary Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Letras / linguística Interdisciplinar Geografía Geociências Farmacia Engenharias iv Engenharias iii Engenharias ii Enfermagem Educação física Educação Economia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Biotecnología Biodiversidade Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 20452322
Adreça de correu electrònic de l'autor: cyril.godard@urv.cat carmen.claver@urv.cat
Identificador de l'autor: 0000-0001-5762-4904 0000-0002-2518-7401
Data d'alta del registre: 2024-10-12
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://www.nature.com/articles/s41598-019-55105-x
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Scientific Reports. 9 (18776): 18776-
Referència de l'ítem segons les normes APA: Patarroyo, Javier; Delgado, Jorge A; Merkoci, Florind; Genc, Aziz; Sauthier, Guillaume; Llorca, Jordi; Arbiol, Jordi; Bastus, Neus G; Godard, Cyril; C (2019). Hollow PdAg-CeO2 heterodimer nanocrystals as highly structured heterogeneous catalysts. Scientific Reports, 9(18776), 18776-. DOI: 10.1038/s41598-019-55105-x
DOI de l'article: 10.1038/s41598-019-55105-x
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2019
Tipus de publicació: Journal Publications