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Sauerstoffspeicherung In ihrer Zuschrift auf S. 1490 nutzen Y. Takahashi et al. Spektroptychographie mit harter Röntgenstrahlung, um die Dichte und Valenz von Cer in Pt/Ce2Zr2Ox‐Katalysatorpartikeln mit hoher räumlicher Auflösung zu bestimmen.
The cerium density and valence in micrometer‐size platinum‐supported cerium–zirconium oxide Pt/Ce2Zr2Ox (x=7–8) three‐way catalyst particles were successfully mapped by hard X‐ray spectro‐ptychography (ptychographic‐X‐ray absorption fine structure, XAFS). The analysis of correlation between the Ce density and valence in ptychographic‐XAFS images suggested the existence of several oxidation behaviors...
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