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Journal Article

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

MPS-Authors
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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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acscatal.2c03692.pdf
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Citation

Zeininger, J., Winkler, P., Raab, M., Suchorski, Y., Prieto, M., Tanase, L. C., et al. (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.


Cite as: https://hdl.handle.net/21.11116/0000-000B-3CB5-6
Abstract
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.