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  Selectivity in propene dehydrogenation on Pt and Pt3Sn surfaces from first principles

Nykänen, L., & Honkala, K. (2013). Selectivity in propene dehydrogenation on Pt and Pt3Sn surfaces from first principles. ACS Catalysis, 3(12), 3026-3030. doi:10.1021/cs400566y.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-D71A-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-D71B-F
Genre: Journal Article

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 Creators:
Nykänen, Lauri1, 2, Author              
Honkala, Karoliina2, Author              
Affiliations:
1Computational Materials Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863337              
2Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland, persistent22              

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Free keywords: Atomistic thermodynamics; Dehydrogenation of propanes; First principles; Heterogenous catalysis; High selectivity; Pt-based catalyst; Pt-sn catalysts; Sn alloys, Alloying; Catalyst selectivity; Dehydrogenation; Density functional theory; Propylene; Thermodynamics; Tin, Platinum
 Abstract: Propene can be produced via dehydrogenation of propane on Pt-based catalysts; however, the catalysts are plagued by low selectivity toward propene and high coke formation. The selectivity can be improved and the coke formation reduced by alloying Pt with Sn. The alloying is known to weaken the binding of propene, which in part explains the improved performance. We conducted density functional theory calculations to study the dehydrogenation of propene on flat and stepped Pt and Pt3Sn surfaces. The steps on Pt dehydrogenate propene readily, whereas, on Pt3Sn, the steps are inert because they are decorated with Sn. Our results indicate that the high selectivity and low coking on the Pt-Sn catalyst can result from a lack of active Pt step sites. © 2013 American Chemical Society.

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Language(s): eng - English
 Dates: 2013-12-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/cs400566y
BibTex Citekey: Nykänen20133026
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Title: ACS Catalysis
  Abbreviation : ACS Catal.
Source Genre: Journal
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Publ. Info: Washington, DC : ACS
Pages: - Volume / Issue: 3 (12) Sequence Number: - Start / End Page: 3026 - 3030 Identifier: Other: 2155-5435
CoNE: https://pure.mpg.de/cone/journals/resource/2155-5435