A3 - Reactivity and advanced electron microscopy of mass selected clusters deposited on oxide supports


Mass selected Pt, Pd and Pt-Pd clusters/particles with a narrow size distribution in the range of 50-2000 atoms are deposited on different well defined substrates using a soft landing approach as well defined model systems for catalysis and tested in a specially designed reaction chamber. The structure of selected systems is characterized by in situ electron microscopy in defined gas atmospheres. Size distribution, shape, morphology, composition, atomic structure and substrate interaction as well as their evolution are determined under selected conditions relevant for emission control in order to correlate structure and catalytic activity.

Project-related publications by participating researchers

Project- and subject-related list of publications

S. Chen, X. Huang, D. Schild, D. Wang, C. Kübel, S. Behrens, PdIn intermetallic nanoparticles with high catalytic selectivity for liquid-phase semi-hydrogenation of diphenylacetylene, Nanoscale 2022, 14, 17661.

DOI: 10.1039/D2NR03674F

G. Iankevich, A. Sarkar, S. Katnagallu, M. R. Chellali, D. Wang, L. Velasco, R. Singh, T. Reisinger, R. Kruk, H. Hahn, A New Class of ClusterMatrix Nanocomposite Made of Fully Miscible Components, Adv. Mater. 2023, 35, 2208774(9).

DOI: 10.1002/adma.202208774

S. Kang, D. Wang, A. Caron, C. Minnert, K. Durst, C. Kübel, X. Mu, Direct Observation of Quadrupolar Strain Fields forming a Shear Band in Metallic Glasses. Adv. Mater. 2023, 35, 2212086.

DOI: 10.1002/adma.202212086

S. J. Kang, V. Wollersen, C. Minnert, K. Durst, H. S. Kim, C. Kübel, X. Mu, Mapping local atomic structure of metallic glasses using machine learning aided 4D-STEM, Acta Mat. 2024, 263, 119495;

DOI: 10.1016/j.actamat.2023.119495

X. K. Mu, M. R. Chellali, E. Boltynjuk, D. Gunderov, R. Z. Valiev, H. Hahn, C. Kübel, Y. Ivanisenko, L. Velasco, Unveiling the Local Atomic Arrangements in the Shear Band Regions of Metallic Glass, Adv. Mater. 2021, 33. 2007267.

DOI: 10.1002/adma.202007267

X. Mu, M. Chen, R. Mikut, H. Hahn, C. Kübel, Unveiling local atomic bonding and packing of amorphous nanophases via independent component analysis facilitated pair distribution function, Acta Mat. 2021, 212, 116932.

DOI: 10.1016/j.actamat.2021.116932

A. R. Lakshmi Nilayam, C. B. Maliakkal, R. Shadkam, M. V. Kante, D. Wang, H. Hahn, C. Kübel, Reactivity and advanced electron microscopy of mass selected Pt clusters deposited on CeO2 supports for co oxidation catalysis, Microscopy Conference 2023

ISBN 978-3-948023-29-4, IM7.P018

C. Schmitt, N. Da Roit, M. Neumaier, C. Maliakkal, D. Wang, T. Henrich, C. Kübel, M. Kappes, S. Behrens, Continuous Flow Synthesis of Atom-Precise Platinum Clusters. Nanoscale Adv. 2024.

DOI: 10.1039/D4NA00074A

S. Weber, R.T. Zimmermann, J. Bremer, K.L. Abel, D. Poppitz, N. Prinz, J. Ilsemann, S. Wendholt, Q. Yang, R. Pashminehazar, F. Monaco, P. Cloetens, X. Huang, C. Kübel, E. Kondratenko, M. Bauer, M. Bäumer, M. Zobel, R. Gläser, K. Sundmacher, T.L. Sheppard, Digitization in Catalysis Research: Towards a Holistic Description of a Ni/Al2O3 Reference Catalyst for CO2 Methanation, ChemCatChem, 2022, 14, e202101878.

DOI: 1002/cctc.202101878