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About this Abstract
Meeting	2025 TMS Annual Meeting & Exhibition
Symposium	Characterization of Materials through High Resolution Coherent Imaging
Presentation Title	Operando and Linear Dichroic Ptychographic Spectro-Tomography of Heterogenous Catalysts
Author(s)	Johannes Ihli, Zirui Gao , Andreas Apseros Andreas, Appel Christian, Tomas Aidukas, Ana Diaz, Valerio Scagnoli, Andreas Menzel, Manuel Guizar Sicairos, Claire Donnelly , Jeroen van Bokhoven, Mirko Holler
On-Site Speaker (Planned)	Johannes Ihli
Abstract Scope	Heterogeneous catalysts drive numerous industrial processes, including chemical production, energy conversion, and environmental protection. Enhancing their efficiency and durability necessitates a deep understanding of the intricate relationships between their complex 3D structure, chemical makeup and performance. Bulk and or ambient-temperature characterization often fails to capture the complex nature of these catalysts under real operational conditions, creating a significant barrier to optimizing their design and functionality. Here, we present recent advances in the acquisition and analysis of (Operando) and Linear Dichroic Ptychographic Spectro-Tomography as a tool to facilitate a 3D compositional, chemical and or microstructural characterization of Heterogeneous Catalysts in their use-geometry under operational conditions. Presented are three studies ranging from model-supported catalysts to industrial in-use catalysts. Catalysts were examined at a spatial resolution of 20 nm at up to 800°C under contrasting atmospheres.
Proceedings Inclusion?	Planned:
Keywords	Characterization, Energy Conversion and Storage, Ceramics

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