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タイトル: | Dynamic Behavior of Rh Species in Rh/Al2O3 Model Catalyst during Three-Way Catalytic Reaction: An Operando X-ray Absorption Spectroscopy Study |
著者: | Asakura, Hiroyuki https://orcid.org/0000-0001-6451-4738 (unconfirmed) Hosokawa, Saburo Ina, Toshiaki Kato, Kazuo Nitta, Kiyofumi Uera, Kei Uruga, Tomoya Miura, Hiroki Shishido, Tetsuya Ohyama, Junya Satsuma, Atsushi Sato, Katsutoshi https://orcid.org/0000-0002-3998-7012 (unconfirmed) Yamamoto, Akira https://orcid.org/0000-0002-1329-0807 (unconfirmed) Hinokuma, Satoshi Yoshida, Hiroshi Machida, Masato Yamazoe, Seiji Tsukuda, Tatsuya Teramura, Kentaro https://orcid.org/0000-0003-2916-4597 (unconfirmed) Tanaka, Tsunehiro https://orcid.org/0000-0002-1371-5836 (unconfirmed) |
著者名の別形: | 朝倉, 博行 田中, 庸裕 |
発行日: | 10-Jan-2018 |
出版者: | American Chemical Society (ACS) |
誌名: | Journal of the American Chemical Society |
巻: | 140 |
号: | 1 |
開始ページ: | 176 |
終了ページ: | 184 |
抄録: | The dynamic behavior of Rh species in 1 wt% Rh/Al2O3 catalyst during the three-way catalytic reaction was examined using a micro gas chromatograph, a NOx meter, a quadrupole mass spectrometer, and time-resolved quick X-ray absorption spectroscopy (XAS) measurements at a public beamline for XAS, BL01B1 at SPring-8, operando. The combined data suggest different surface rearrangement behavior, random reduction processes, and autocatalytic oxidation processes of Rh species when the gas is switched from a reductive to an oxidative atmosphere and vice versa. This study demonstrates an implementation of a powerful operando XAS system for heterogeneous catalytic reactions and its importance for understanding the dynamic behavior of active metal species of catalysts. |
記述: | 自動車排ガス浄化触媒における貴金属成分の酸化還元挙動の解明 --高輝度放射光を用いた触媒のリアルタイムモニタリング--. 京都大学プレスリリース. 2018-02-13. |
著作権等: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jacs.7b07114. The full-text file will be made open to the public on 11 December 2018 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/229120 |
DOI(出版社版): | 10.1021/jacs.7b07114 |
PubMed ID: | 29224338 |
関連リンク: | http://www.kyoto-u.ac.jp/ja/research/research_results/2017/171211_3.html |
出現コレクション: | 学術雑誌掲載論文等 |
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