RT journal article
T1 Structural modulation and direct measurement of subnanometric bimetallic PtSn clusters confined in zeolites
A1 Liu, Lichen
A1 López Haro, Miguel
A1 Lopes, Christian W.
A1 Rojas-Buzo, Sergio
A1 Heydorn, Patricia Concepción
A1 Manzorro Ureba, Ramón
A1 Simonelli, Laura
A1 Sattler, Aaron
A1 Serna, Pedro
A1 Calvino Gámez, José Juan
A1 Corma Canós, Avelino
A1 serna, pedro
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
AB Modulating the structures of subnanometric metal clusters at the atomic level is a great synthetic and characterization challenge in catalysis. Here, we show how the catalytic properties of subnanometric platinum clusters (0.5–0.6 nm) confined in the sinusoidal 10R channels of purely siliceous MFI zeolite are modulated upon introduction of partially reduced tin species that interact with the noble metal at the metal/support interface. The platinum–tin clusters are stable in H2 over an extended period of time (>6 h), even at high temperatures (for example, 600 °C), which is determined by only a few additional tin atoms added to the platinum clusters. The structural features of platinum–tin clusters, which are not immediately visible by conventional characterization techniques but can be established after combination of in situ extended X-ray absorption fine structure, high-angle annular dark-field scanning transmission electron microscopy and CO infrared data, are key to providing a one-order of magnitude lower deactivation rate in the propane dehydrogenation reaction while maintaining high intrinsic (initial) catalytic activit
PB Nature Publishing Group
SN 2520-1158
YR 2020
FD 2020
LK http://hdl.handle.net/10498/30602
UL http://hdl.handle.net/10498/30602
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026