Generation of subnanometric platinum with high stability during transformation of a 2D zeolite into 3D
Financiación H2020 / H2020 FundsFinanciación FP7 / Fp7 Funds
Resumen: Single metal atoms and metal clusters have attracted much attention thanks to their advantageous capabilities as heterogeneous catalysts. However, the generation of stable single atoms and clusters on a solid support is still challenging. Herein, we report a new strategy for the generation of single Pt atoms and Pt clusters with exceptionally high thermal stability, formed within purely siliceous MCM-22 during the growth of a two-dimensional zeolite into three dimensions. These subnanometric Pt species are stabilized by MCM-22, even after treatment in air up to 540 °C. Furthermore, these stable Pt species confined within internal framework cavities show size-selective catalysis for the hydrogenation of alkenes. High-temperature oxidation-reduction treatments result in the growth of encapsulated Pt species to small nanoparticles in the approximate size range of 1 to 2 nm. The stability and catalytic activity of encapsulated Pt species is also reflected in the dehydrogenation of propane to propylene.
Idioma: Inglés
DOI: 10.1038/nmat4757
Año: 2017
Publicado en: NATURE MATERIALS 16, 1 (2017), 132-138
ISSN: 1476-1122

Factor impacto JCR: 39.235 (2017)
Categ. JCR: CHEMISTRY, PHYSICAL rank: 1 / 146 = 0.007 (2017) - Q1 - T1
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 1 / 67 = 0.015 (2017) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 1 / 146 = 0.007 (2017) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 3 / 285 = 0.011 (2017) - Q1 - T1

Factor impacto SCIMAGO: 18.263 - Chemistry (miscellaneous) (Q1) - Condensed Matter Physics (Q1) - Mechanics of Materials (Q1) - Mechanical Engineering (Q1) - Materials Science (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/FP7/312483/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM 2
Financiación: info:eu-repo/grantAgreement/EC/H2020/642742/EU/Graphene-based nanomaterials for touchscreen technologies: Comprehension, Commerce and Communication/Enabling Excellence
Financiación: info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio/CSD2009-0050
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2013-46159-C3-3-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-52085-C2-1-P
Tipo y forma: Artículo (PostPrint)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)

Derechos Reservados Derechos reservados por el editor de la revista


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