Título:
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Electrochemical Effects at Surfactant–Platinum Nanoparticle Interfaces Boost Catalytic Performance
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Autor/a:
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Almora-Barrios, Neyvis; Vilé, Gianvito; Garcia-Ratés, Miquel; Perez-Ramirez, Javier; López, Núria
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Abstract:
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Nanoparticles are applied in a variety of industrially relevant
transformations as heterogeneous catalysts typically with the
help of an external force (pressure, temperature, or voltage) to
steer the chemistry. The modification of platinum nanoparticles
by a phosphate–amino surfactant enables catalysis without external
energy supply in the hydrogenation of nitrobenzene to
aniline. This can be attributed to the complex surfactant/metal
interface which is able to split hydrogen into protons and electrons.
The subsequent hydrogenation process mimics the electrochemical
reduction described by Haber. The surfactant decorated
Pt catalyst is two orders of magnitude more active than
the state-of-the-art Pb-poisoned Pt catalyst. Our study provides
a new approach to understand the functionality of emerging
catalytic systems and can be applied to design new materials
with optimal interfaces. |
Fecha de creación:
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21-02-2017 |
Materia(s):
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54 |
Derechos:
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L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by-nc-nd/4.0/ |
Páginas:
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604 p. |
Tipo de documento:
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Artículo Artículo - Versión aceptada |
DOI:
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10.1002/cctc.201601134
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Compartir:
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