AI Article Synopsis
- The gas composition around a catalytic sample influences its surface structure, which is crucial for studying model catalysts in real-time.
- A study focuses on the gas phase near a Pd(110) surface during CO oxidation, revealing a lower CO partial pressure at the surface compared to what mass spectrometry measures.
- This variation in CO concentration within a boundary layer directly affects the catalyst’s surface structure and functionality, highlighting its importance in in situ model catalysis research.
Article Abstract
The gas composition surrounding a catalytic sample has direct impact on its surface structure, which is essential when in situ investigations of model catalysts are performed. Herein a study of the gas phase close to a Pd(110) surface during CO oxidation under semirealistic conditions is presented. Images of the gas phase, provided by planar laser-induced fluorescence, clearly visualize the formation of a boundary layer with a significantly lower CO partial pressure close to the catalytically active surface, in comparison to the overall concentration as detected by mass spectrometry. The CO partial pressure variation within the boundary layer will have a profound effect on the catalysts' surface structure and function and needs to be taken into consideration for in situ model catalysis studies.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4394142 | PMC |
| http://dx.doi.org/10.1021/cs502048w | DOI Listing |
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