Pattern Formation in Catalytic H2 Oxidation on Rh: Zooming in by Correlative 
Microscopy

Zeininger, Johannes; Winkler, Philipp; Raab, Maximilian; Suchorski, Yuri; Prieto, Mauricio; Tanase, Liviu Cristian; Caldas, Lucas de Souza; Tiwari, Aarti; Schmidt, Thomas; Stöger-Pollach, Michael; Steiger-Thirsfeld, Andreas; Roldan Cuenya, Beatriz; Rupprechter, Günther

doi:10.1021/acscatal.2c03692

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Pattern Formation in Catalytic H₂ Oxidation on Rh: Zooming in by Correlative Microscopy

MPS-Authors

/persons/resource/persons179553

Prieto, Mauricio
Interface Science, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons213883

Tanase, Liviu Cristian
Interface Science, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons232567

Caldas, Lucas de Souza
Interface Science, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons281391

Tiwari, Aarti
Interface Science, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22076

Schmidt, Thomas
Interface Science, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22020

Roldan Cuenya, Beatriz
Interface Science, Fritz Haber Institute, Max Planck Society;

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引用

Zeininger, J., Winkler, P., Raab, M., Suchorski, Y., Prieto, M., Tanase, L. C., Caldas, L. d. S., Tiwari, A., Schmidt, T., Stöger-Pollach, M., Steiger-Thirsfeld, A., Roldan Cuenya, B., & Rupprechter, G. (2022). Pattern Formation in Catalytic H₂ Oxidation on Rh: Zooming in by Correlative Microscopy. ACS Catalysis, 12(19), 11974-11983. doi:10.1021/acscatal.2c03692.

引用: https://hdl.handle.net/21.11116/0000-000B-3CB5-6

要旨

Spatio-temporal nonuniformities in H₂ oxidation on individual Rh(h k l) domains of a polycrystalline Rh foil were studied in the 10^–6 mbar pressure range by photoemission electron microscopy (PEEM), X-ray photoemission electron microscopy (XPEEM), and low-energy electron microscopy (LEEM). The latter two were used for in situ correlative microscopy to zoom in with significantly higher lateral resolution, allowing detection of an unusual island-mediated oxygen front propagation during kinetic transitions. The origin of the island-mediated front propagation was rationalized by model calculations based on a hybrid approach of microkinetic modeling and Monte Carlo simulations.