B03 – In situ/operando Characterization of Noble Metal Clusters and Particles on Metal Oxides at Work
This project aims at tracking and correlating the structure and activity of oxide-supported metals under steady and transient reaction conditions. Using operando X-ray absorption/emission and IR spectroscopy complemented by in situ TEM, we will investigate selected noble metal clusters and nanoparticles deposited on well-defined supports under reaction conditions. Based on the insights into oxidation/reduction behavior, segregation/sintering/redispersion processes and morphology changes, knowledge-based reactivation procedures and improved catalyst design (based on bimetallic particles, mixed support oxides) will be achieved.
The project is funded since 2021 and is now in the second funding phase.
Project-related publications by participating researchers
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Project- and subject-related list of publications |
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L. Caulfield, Sauter, E., H. Idriss, Y. Wang, C. Wöll, Bridging the Pressure and Materials Gap in Heterogeneous Catalysis: A Combined UHV, In Situ, and Operando Study Using Infrared Spectroscopy. J. Phys. Chem. C 2023, 127 (29), 14023-14029. DOI: 10.1021/acs.jpcc.3c03567. |
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P. G. Lustemberg, P. N. Plessow, Y. Wang, C. Yang, A. Nefedov, F. Studt, C. Wöll, Ganduglia-Pirovano, M. V. Vibrational frequencies of cerium-oxide-bound CO: A challenge for conventional DFT methods. Phys. Rev. Lett. 2020, 125 (25), 256101. |
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P. G. Lustemberg, C. Yang, Y. Wang, C. Wöll, M. V. Ganduglia-Pirovano, Vibrational frequencies of CO bound to all three low-index cerium oxide surfaces: A consistent theoretical description of vacancy-induced changes using density functional theory. J. Chem. Phys. 2023, 159 (3), 034704. DOI: 10.1063/5.0153745. |
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V. Marchuk, X. H. Huang, J.-D. Grunwaldt, D. E. Doronkin, Structure sensitivity of alumina- and zeolite-supported platinum ammonia slip catalysts. Catal. Sci. Technol. 2023, 13 (10), 2946-2965. DOI: 10.1039/d2cy02095e. |
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F. Maurer, A. Beck, J. Jelic, W. Wang, S. Mangold, M. Stehle, D. Wang, P. Dolcet, A. M. Gänzler, C. Kübel, F. Studt, M. Casapu, J.-D. Grunwaldt, Surface Noble Metal Concentration on Ceria as a Key Descriptor for Efficient Catalytic CO Oxidation. ACS Catal. 2022, 12 (4), 2473-2486. DOI: 10.1021/acscatal.1c04565. |
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F. Maurer, J. Jelic, J. J. Wang, A. M. Gänzler, P. Dolcet, C. Wöll, Y. Wang, F. Studt, M. Casapu, J.-D. Grunwaldt, Tracking the formation, fate and consequence for catalytic activity of Pt single sites on CeO2. Nat. Catal. 2020, 3 (10), 824-833. |
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B. B. Sarma, F. Maurer, D. E. Doronkin, J.-D. Grunwaldt, Design of Single-Atom Catalysts and Tracking Their Fate Using Operando and Advanced X-ray Spectroscopic Tools. Chem. Rev. 2022, 123 (1), 379-444. |
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M. Scheffler, M. Aeschlimann, M. Albrecht, T. Bereau, H.-J. Bungartz, C. Felser, M. Greiner, A. Groß, C. T. Koch, K. Kremer, W. E. Nagel, M. Scheidgen, C. Wöll, FAIR data enabling new horizons for materials research. Nature 2022, 604 (7907), 635-642. |
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J. J. Wang, E. Sauter, A. Nefedov, S. Heissler, F. Maurer, M. Casapu, J.-D. Grunwaldt, Y. Wang, C. Wöll, Dynamic Structural Evolution of Ceria-Supported Pt Particles: A Thorough Spectroscopic Study. J. Phys. Chem. B 2022, 126 (21), 9051-9058. DOI: 10.1021/acs.jpcc.2c02420. |
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C. Wöll, Structure and Chemical Properties of Oxide Nanoparticles Determined by Surface-Ligand IR Spectroscopy. ASC Catalysis 2020, 10 (1), 168-176. DOI: 10.1021/acscatal.9b04016. |