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  Model studies on heterogeneous catalysts at the atomic scale: From supported metal particles to two-dimensional zeolites

Freund, H.-J., Heyde, M., Nilius, N., Schauermann, S., Shaikhutdinov, S. K., & Sterrer, M. (2013). Model studies on heterogeneous catalysts at the atomic scale: From supported metal particles to two-dimensional zeolites. Journal of Catalysis, 308, 154-167. doi:10.1016/j.jcat.2013.06.007.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-61C5-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-BBE4-C
Genre: Journal Article

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JCatal.pdf (Any fulltext), 274KB
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2013
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 Creators:
Freund, Hans-Joachim1, Author              
Heyde, Markus1, Author              
Nilius, Niklas1, Author              
Schauermann, Swetlana1, Author              
Shaikhutdinov, Shamil K.1, Author              
Sterrer, Martin1, Author              
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              

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Free keywords: Model systems; Dopants; Charge transfer; Supported nanoparticles
 Abstract: After a general introduction to model studies in catalysis, results from different research areas are presented: (a) adsorption and reaction on nanoparticles supported on thin oxide films. It is shown that carbonaceous deposits on specific nanoparticle sites influence hydrogenation reactions through control of hydrogen surface–subsurface diffusion. (b) 2D-3D-morphology, geometric, and electronic structure of supported metal nanoparticles partially in relation to doping of the support. We learn how dopants, as electron sources, even if they are well beneath the active surface influence nanoparticle morphology on surfaces. (c) Strong metal–support interaction (SMSI). Ultrathin oxide films are proven to become chemically active in CO oxidation as they form on deposited nanoparticles dependent on the oxygen chemical potential in the gas phase. (d) Adsorption and reaction on two-dimensional silicates and alumino silicates in ordered and vitreous phases. Bilayer silica films on Ru(0 0 0 1) are transformed by Al doping into 2D-aluminosilicates and shown to exhibit binding hydroxyl with an acidity close to 3D-zeolites, such as chabazite.

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Language(s): eng - English
 Dates: 2013-05-312013-02-212013-06-092013-07-122013-12
 Publication Status: Published in print
 Pages: 14
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.jcat.2013.06.007
 Degree: -

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Title: Journal of Catalysis
Source Genre: Journal
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Publ. Info: San Diego, CA. : Academic Press
Pages: - Volume / Issue: 308 Sequence Number: - Start / End Page: 154 - 167 Identifier: ISSN: 0021-9517
CoNE: https://pure.mpg.de/cone/journals/resource/954922645027