Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/175169
Title: Transition metal atoms encapsulated within microporous Silicalite-1 zeolite: A systematic computational study
Author: Prats Garcia, Hèctor
Alonso Benito, Gerard
Sayós Ortega, Ramón
Gamallo Belmonte, Pablo
Keywords: Silicats
Metalls de transició
Teoria del funcional de densitat
Silicates
Transition metals
Density functionals
Issue Date: 9-Aug-2020
Publisher: Elsevier B.V.
Abstract: Single-atom catalysts (SACs) have emerged as a novel class of catalysts that show unique catalytic properties thanks to their easy tuneability. In this context, zeolites are widely used as support materials for SACs, since the steric restrictions from their channels can effectively suppress the aggregation of the metal particles and provide encapsulated metal atoms with exceptional stability. Although significant efforts have been made to study zeolite-supported SACs, only a few transition metal atoms have been tested, and the determination of precise locations of single metal atoms within the zeolite matrix by experiments remains a nontrivial task. Herein we provide a thorough dispersion corrected density functional theory study of the energetic, structural, magnetic and electronic properties for the full sets of 3d, 4d and 5d transition metal atoms encapsulated on MFI-type Silicalite-1 zeolite, namely TM@S-1. Most TM atoms prefer to adsorb in the center of the S-1 channels, weakly interacting with the zeolite, with the exception of Group 3 - Sc, Y, La - , Group 10 - Ni, Pd, Pt - , Ru and Rh atoms, making them good candidates as stable SACs with superior catalytic performance. The optimized geometry files for the full set of TM@S-1 have been uploaded to a public online repository, paving the road for further catalytic studies of these systems. The behavioral trends gained from this study provide a solid theoretical background that can be used as the basis for interpreting, understanding, and discussing already observed experimental features, and future findings as well.
Note: Versió postprint del document publicat a: https://doi.org/10.1016/j.micromeso.2020.110462
It is part of: Microporous and Mesoporous Materials, 2020, vol. 308, p. 110462
URI: http://hdl.handle.net/2445/175169
Related resource: https://doi.org/10.1016/j.micromeso.2020.110462
ISSN: 1387-1811
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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