Ingale, PiyushKnemeyer, KristianPreikschas, PhilYe, MengyangGeske, MichaelNaumann d’Alnoncourt, RaoulThomas, ArneRosowski, Frank2021-03-112021-03-112020-11-182044-4753https://depositonce.tu-berlin.de/handle/11303/12789http://dx.doi.org/10.14279/depositonce-11589Supported 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.en540 Chemie und zugeordnete WissenschaftendehydrogenationpropanePt catalystsArticle2044-4761