Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-11589
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Main Title: Design of PtZn nanoalloy catalysts for propane dehydrogenation through interface tailoring via atomic layer deposition
Author(s): Ingale, Piyush
Knemeyer, Kristian
Preikschas, Phil
Ye, Mengyang
Geske, Michael
Naumann d'Alnoncourt, Raoul
Thomas, Arne
Rosowski, Frank
Type: Article
URI: https://depositonce.tu-berlin.de/handle/11303/12789
http://dx.doi.org/10.14279/depositonce-11589
License: https://creativecommons.org/licenses/by-nc/3.0/
Abstract: Supported Pt nanoparticles are widely used for the catalytic dehydrogenation of propane to propene. Monometallic Pt catalysts are subject to fast deactivation. A successful strategy for stabilization is alloying Pt with a second metal. In this study, we present a novel approach for the precise formation of bimetallic nanoparticles via tailoring of the interface between metal nanoparticles and the support. An ultra-thin functional layer of ZnO is deposited via atomic layer deposition on SiO2. The supported Pt nanoparticles undergo a phase transformation and form Pt1Zn1 alloy nanoparticles under reductive thermal treatment. The resulting Pt1Zn1 catalyst showed a high and stable selectivity to propene over 12 hours of time on stream. The activity of the Pt1Zn1 catalyst was 1.5 times higher than that of a catalyst of the same composition prepared by incipient wetness impregnation. The nanoalloy formation causes electronic and geometric modification of Pt which reduces side reactions and leads to a stable and active propane dehydrogenation catalyst.
Subject(s): dehydrogenation
propane
Pt catalysts
Issue Date: 18-Nov-2020
Date Available: 11-Mar-2021
Is Part Of: 10.14279/depositonce-12409
Language Code: en
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Sponsor/Funder: TU Berlin, Open-Access-Mittel – 2020
Journal Title: Catalysis Science and Technology
Publisher: Royal Society of Chemistry
Volume: 11
Issue: 2
Publisher DOI: 10.1039/D0CY01528H
Page Start: 484
Page End: 493
EISSN: 2044-4761
ISSN: 2044-4753
TU Affiliation(s): Verbundforschung » Exzellenzcluster (EXC) » BasCat Joint Lab
Appears in Collections:Technische Universität Berlin » Publications

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