Author:
Wittkämper Haiko,Hock Rainer,Weißer Matthias,Dallmann Johannes,Vogel Carola,Raman Narayanan,Taccardi Nicola,Haumann Marco,Wasserscheid Peter,Hsieh Tzung-En,Maisel Sven,Moritz Michael,Wichmann Christoph,Frisch Johannes,Gorgoi Mihaela,Wilks Regan G.,Bär Marcus,Wu Mingjian,Spiecker Erdmann,Görling Andreas,Unruh Tobias,Steinrück Hans-Peter,Papp Christian
Abstract
AbstractIsolated active sites have great potential to be highly efficient and stable in heterogeneous catalysis, while enabling low costs due to the low transition metal content. Herein, we present results on the synthesis, first catalytic trials, and characterization of the Ga9Rh2 phase and the hitherto not-studied Ga3Rh phase. We used XRD and TEM for structural characterization, and with XPS, EDX we accessed the chemical composition and electronic structure of the intermetallic compounds. In combination with catalytic tests of these phases in the challenging propane dehydrogenation and by DFT calculations, we obtain a comprehensive picture of these novel catalyst materials. Their specific crystallographic structure leads to isolated Rhodium sites, which is proposed to be the decisive factor for the catalytic properties of the systems.
Funder
Deutsche Forschungsgemeinschaft
Friedrich-Alexander-Universität Erlangen-Nürnberg
Publisher
Springer Science and Business Media LLC
Cited by
5 articles.
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