C3 - Chemical Imaging of Structured Catalysts using High Resolution X-ray Microscopy and Tomography


This project addresses the structural and chemical complexity of technical emission control catalysts using multimodal and multiscale synchrotron-radiation-based hard X-ray microscopy and tomography, complemented by electron tomography. This allows non-invasive chemical imaging of technical catalysts on all relevant length scales for catalysis from nm to mm. In situ and operando methods will also be used to derive structure-activity relationships, and relate local structure observations to catalyst performance. The rich data output can be used to assist simulation, modelling and kinetic studies.

Project-related publications by participating researchers

Project- and subject-related list of publications

S. Alizadehfanaloo, J. Garrevoet, M. Seyrich, V. Murzin, J. Becher, D.E. Doronkin, T.L. Sheppard, J.-D. Grunwaldt, C.G. Schroer, A. Schropp, Tracking Dynamic Structural Changes in Catalysis by Rapid 2D-XANES Microscopy. J. Synchrotron Radiat. 2021, 28 (5), 1518-1527,

DOI: 10.1107/S1600577521007074

J. Becher, T.L. Sheppard, Y. Fam, S. Baier, W. Wang, D. Wang, S. Kulkarni, T.F. Keller, M. Lyubomirskiy, D. Brueckner, M. Kahnt, A. Schropp, C.G. Schroer, J.-D. Grunwaldt, Mapping the Pore Architecture of Structured Catalyst Monoliths from Nanometer to Centimeter Scale with Electron and X-ray Tomographies, J. Phys. Chem. C. 2019, 123 (41), 25197-25208.

DOI: 10.1021/acs.jpcc.9b06541

J. Becher, D.F. Sanchez, D.E. Doronkin, D. Zengel, D.M. Meira, S. Pascarelli, J.-D. Grunwaldt, T.L. Sheppard, Chemical gradients in automotive Cu-SSZ-13 catalysts for NOx removal revealed by operando X-ray spectrotomography, Nat. Catal. 2021, 4 (1), 46-53,

DOI: 10.1038/s41929-020-00552-3

J. Becher, T. Sheppard, J.-D. Grunwaldt, X-Ray Microscopy and Tomography in Springer Handbook of Advanced Catalyst Characterization (eds. I. E. Wachs, M. A. Bañares). 2023, 689-738, Springer International Publishing,

DOI: 10.1007/978-3-031-07125-6_32

S. Das, R. Pasminehazar, S. Sharma, S. Weber, T.L. Sheppard, New Dimensions in Catalysis Research with Hard X-Ray Tomography. Chem. Ing. Tech. 2022, 94 (11), 1591-1610,

DOI: 10.1002/cite.202200082

M. Kahnt, L. Grote, D. Brückner, M. Seyrich, F. Wittwer, D. Koziej, C.G. Schroer, Multi-slice ptychography enables high-resolution measurements in extended chemical reactors. Sci. Rep. 2021, 11 (1), 1500,

DOI: 10.1038/s41598-020-80926-6

M. Lyubomirskiy, F. Wittwer, M. Kahnt, F. Koch, A. Kubec, K.V. Falch, J. Garrevoet, M. Seyrich, C. David, C.G. Schroer, Multi-beam X-ray ptychography using coded probes for rapid non-destructive high resolution imaging of extended samples. Sci. Rep. 2022, 12 (1), 6203,

DOI: 10.1038/s41598-022-09466-5

F. Seiboth, A. Schropp, M. Scholz, F. Wittwer, C. Rödel, M. Wünsche, T. Ullsperger, S. Nolte, J. Rahomäki, K. Parfeniukas, S. Giakoumidis, U. Vogt, U. Wagner, C. Rau, U. Bosenberg, J. Garrevoet, G. Falkenberg, E.C. Galtier, H.J. Lee, B. Nagler, C.G. Schroer, Perfect X-ray focusing via fitting corrective glasses to aberrated optics, Nat. Commun. 2017, 8, 14623,

DOI: 10.1038/ncomms14623

S. Weber, A. Diaz, M. Holler, A. Schropp, M. Lyubomirskiy, K.L. Abel, M. Kahnt, A. Jeromin, S. Kulkarni, T.F. Keller, R. Gläser, T.L. Sheppard, Evolution of Hierarchically Porous Nickel Alumina Catalysts Studied by X-ray Ptychography, Adv. Sci. 2022, 9 (8), 2105432,

DOI: 10.1002/advs.202105432

F. Wittwer, M. Lyubomirskiy, F. Koch, M. Kahnt, M. Seyrich, J. Garrevoet, C. David, C.G. Schroer, Upscaling of multi-beam x-ray ptychography for efficient x-ray microscopy with high resolution and large field of view. Appl. Phys. Lett. 2021, 118 (17),

DOI: 10.1063/5.0045571