Abstract
The spatial distribution of Ce3+and Ce4+in each particle of Ce2Zr2Oxin a three-way conversion catalyst system was successfully imaged during an oxygen storage/release cycle by scanning X-ray absorption fine structure (XAFS) using hard X-ray nanobeams. For the first time, nano-XAFS imaging visualized and identified the modes of non-uniform oxygen diffusion from the interface of Pt catalyst and Ce2Zr2Oxsupport and the active parts in individual catalyst particles.
| Original language | English |
|---|---|
| Pages (from-to) | 12022-12025 |
| Number of pages | 4 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 55 |
| Issue number | 39 |
| DOIs | |
| Publication status | Published - 2016 Jan 1 |
| Externally published | Yes |
Keywords
- XAFS imaging
- ceria–zirconia
- heterogeneous catalysis
- oxygen storage capacity
- structure–activity relationships
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)
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Matsui, H., Ishiguro, N., Enomoto, K., Sekizawa, O., Uruga, T., & Tada, M. (2016). Imaging of Oxygen Diffusion in Individual Platinum/Ce2Zr2OxCatalyst Particles During Oxygen Storage and Release. Angewandte Chemie - International Edition, 55(39), 12022-12025. https://doi.org/10.1002/anie.201606046