Catalytic CO oxidation on Pt under near ambient pressure: A NAP-LEEM study

Franz, Torsten; Boehn, Bernhard von; Marchetto, Helder; Borkenhagen, Benjamin; Lilienkamp, Gerhard; Daum, Winfried; Imbihl, Ronald

doi:10.1016/j.ultramic.2019.02.024

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Catalytic CO oxidation on Pt under near ambient pressure: A NAP-LEEM study

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Marchetto, Helder
Elmitec Elektronenmikroskopie GmbH;
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Franz, T., Boehn, B. v., Marchetto, H., Borkenhagen, B., Lilienkamp, G., Daum, W., et al. (2019). Catalytic CO oxidation on Pt under near ambient pressure: A NAP-LEEM study. Ultramicroscopy, 200, 73-78. doi:10.1016/j.ultramic.2019.02.024.

Cite as: https://hdl.handle.net/21.11116/0000-0003-9DB9-C

Abstract

A near ambient pressure low-energy electron microscope (NAP-LEEM) has recently been constructed, that allows in situ imaging of surfaces up to a pressure of 10⁻¹ mbar. Here we report on pattern formation in catalytic CO oxidation on a Pt(110) single crystal surface and on a polycrystalline Pt foil in the 10⁻² mbar range, operating the microscope in the mirror electron microscopy (MEM) and in the LEEM mode. Excitations localized at structural defects and spiral wave fragments have been observed.