In situ/operando Characterization of Noble Metal Clusters and Particles on Metal Oxides at Work (B03)

• Subject Area: Technical Chemistry ; Physical Chemistry of Solids and Surfaces, Material Characterisation
• Term: since 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 426888090

This project aims at tracking and correlating the structure and activity of oxide-supported metals under steady and transient reaction conditions. For this purpose, operando X-ray absorption/emission and IR spectroscopy complemented by in situ TEM will be applied to investigate selected catalysts based on Pt, Pd and Pt-Pd nanoparticles deposited on well-defined CeO2, TiO2, and Al2O3 supports under emission control reaction conditions. The complementary techniques will elucidate the impact of fluctuations in the gas feed and temperature on the sintering behavior, oxidation/reduction, redispersion processes, morphology changes of nanoparticles and segregation processes in bimetallic systems.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1441: Tracking the active site in heterogeneous catalysis for emission control (TrackAct)
• Major Instrumentation: Catalysis chamber ; Gas supply system + equipment
• Instrumentation Group: 1830 Fourier-Transform-IR-Spektrometer
• Applicant Institution: Karlsruher Institut für Technologie
• Project Heads: Professor Dr. Jan-Dierk Grunwaldt; Professor Dr. Christof Wöll