Articles producció científica> Química Física i Inorgànica

Hollow PdAg-CeO2 heterodimer nanocrystals as highly structured heterogeneous catalysts

  • Dades identificatives

    Identificador: imarina:6012543
    Autors:
    Patarroyo, JavierDelgado, Jorge AMerkoci, FlorindGenc, AzizSauthier, GuillaumeLlorca, JordiArbiol, JordiBastus, Neus GGodard, CyrilClaver, CarmenPuntes, Victor
    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.
  • Altres:

    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
  • Paraules clau:

    Multidisciplinary,Multidisciplinary Sciences
    Semihydrogenation
    Selective hydrogenation
    Performance
    Nanostructures
    Nanoparticles
    Nanocatalysts
    Growth
    Gold
    Design
    Acetylene
    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
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