Visualization of Heterogeneous Oxygen Storage Behavior in Platinum-Supported Cerium-Zirconium Oxide Three-Way Catalyst Particles by Hard X-ray Spectro-Ptychography

Makoto Hirose; Nozomu Ishiguro; Kei Shimomura; Nicolas Burdet; Hirosuke Matsui; Mizuki Tada; Yukio Takahashi

doi:10.1002/anie.201710798

Visualization of Heterogeneous Oxygen Storage Behavior in Platinum-Supported Cerium-Zirconium Oxide Three-Way Catalyst Particles by Hard X-ray Spectro-Ptychography

Makoto Hirose, Nozomu Ishiguro, Kei Shimomura, Nicolas Burdet, Hirosuke Matsui, Mizuki Tada, Yukio Takahashi

研究成果: Article › 査読

8 被引用数 (Scopus)

抄録

The cerium density and valence in micrometer-size platinum-supported cerium–zirconium oxide Pt/Ce₂Zr₂O_x (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 in the oxygen storage process in the Ce₂Zr₂O_x particles. Ptychographic-XAFS will open up the nanoscale chemical imaging and structural analysis of heterogeneous catalysts.

本文言語	English
ページ（範囲）	1474-1479
ページ数	6
ジャーナル	Angewandte Chemie - International Edition
巻	57
号	6
DOI	https://doi.org/10.1002/anie.201710798
出版ステータス	Published - 2018 2 5
外部発表	はい

ASJC Scopus subject areas

Catalysis
Chemistry(all)

文献へのアクセス

10.1002/anie.201710798

フィンガープリント「Visualization of Heterogeneous Oxygen Storage Behavior in Platinum-Supported Cerium-Zirconium Oxide Three-Way Catalyst Particles by Hard X-ray Spectro-Ptychography」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル

Visualization of Heterogeneous Oxygen Storage Behavior in Platinum-Supported Cerium-Zirconium Oxide Three-Way Catalyst Particles by Hard X-ray Spectro-Ptychography. / Hirose, Makoto; Ishiguro, Nozomu; Shimomura, Kei; Burdet, Nicolas; Matsui, Hirosuke; Tada, Mizuki; Takahashi, Yukio.

In: Angewandte Chemie - International Edition, Vol. 57, No. 6, 05.02.2018, p. 1474-1479.

研究成果: Article › 査読

Hirose, Makoto ; Ishiguro, Nozomu ; Shimomura, Kei ; Burdet, Nicolas ; Matsui, Hirosuke ; Tada, Mizuki ; Takahashi, Yukio. / Visualization of Heterogeneous Oxygen Storage Behavior in Platinum-Supported Cerium-Zirconium Oxide Three-Way Catalyst Particles by Hard X-ray Spectro-Ptychography. In: Angewandte Chemie - International Edition. 2018 ; Vol. 57, No. 6. pp. 1474-1479.

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abstract = "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 in the oxygen storage process in the Ce2Zr2Ox particles. Ptychographic-XAFS will open up the nanoscale chemical imaging and structural analysis of heterogeneous catalysts.",

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