C3 - Chemical Imaging of Structured Catalysts using High Resolution X-ray Microscopy and Tomography
Objective
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
| Prof. Dr. Christian Schroer |
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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. Boesenberg, 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. Nature Commun. 2017, 8, 14623 DOI: 10.1038/ncomms14623 |
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A. Schropp, R. Hoppe, J. Patommel, D. Samberg, F. Seiboth, S. Stephan, G. Wellenreuther, G. Falkenberg, C. G. Schroer, Hard x-ray scanning microscopy with coherent radiation: Beyond the resolution of conventional x-ray microscopes. Appl. Phys. Lett. 2012, 100, 253112 DOI: 10.1063/1.4729942 |
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A. Schropp, P. Boye, A. Goldschmidt, S. Hönig, R. Hoppe, J. Patommel, C. Rakete, D. Samberg, S. Stephan, S. Schöder, M. Burghammer, C. G. Schroer, Non-destructive and quantitative imaging of a nano-structured microchip by ptychographic hard X-ray scanning microscopy. J. Microsc. 2010, 241, 9-12 |
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J. Reinhardt, R. Hoppe, G. Hofmann, C. D. Damsgaard, J. Patommel, C. Baumbach, S. Baier, A. Rochet, J.-D. Grunwaldt, G. Falkenberg, C. G. Schroer, Beamstop-based low-background ptychography to image weakly scattering objects. Ultramicroscopy, 2017, 173, 52-57 |
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M. Kahnt, J. Becher, D. Bückner, Y. Fam, T. Sheppard, T. Weissenberger, F. Wittwer, J.-D. Grunwaldt, W. Schwieger, C. G. Schroer, Coupled ptychography and tomography algorithm improves reconstruction of experimental data. Optica, 2019, 6, 1282-1289 |
| Dr. Thomas Sheppard |
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Y. Fam, T.L. Sheppard, J. Becher, D. Scherhaufer, H. Lambach, S. Kulkarni, T.F. Keller, A. Wittstock, F. Wittwer, M. Seyrich, D. Brueckner, M. Kahnt, X. Yang, A. Schropp, A. Stierle, C. G. Schroer, J.-D. Grunwaldt, A versatile nanoreactor for complementary in situ X-ray and electron microscopy studies in catalysis and materials science. J. Synchrotron Radiat. 2019, 26, 1769-1781 |
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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, 25197-25208 |
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T.L. Sheppard, S.W.T. Price, F. Benzi, S. Baier, M. Klumpp, R. Dittmeyer, W. Schwieger, J.-D. Grunwaldt, In situ multimodal 3D chemical imaging of a hierarchically-structured core@shell catalyst. J. Am. Chem. Soc. 2017, 139, 7855-7863 DOI: 10.1021/jacs.7b02177 |
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Y. Fam, T.L. Sheppard, A. Diaz, T. Scherer, M. Holler, W. Wang, D. Wang, P. Brenner, A. Wittstock, J.-D. Grunwaldt, Correlative multiscale 3D imaging of a hierarchical nanoporous gold catalyst by electron, ion and X-ray nanotomography. ChemCatChem, 2018, 10, 2858-2867 |
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P. Sprenger, T.L. Sheppard, J.-P. Suuronen, A. Gaur, F. Benzi, J.-D. Grunwaldt, Structural evolution of highly active multicomponent catalysts for selective propylene oxidation. Catalysts, 2018, 8, 356 DOI: 10.3390/catal8090356 |