| Literature DB >> 29224338 |
Hiroyuki Asakura1,2, Saburo Hosokawa1,2, Toshiaki Ina3, Kazuo Kato3, Kiyofumi Nitta3, Kei Uera3, Tomoya Uruga3,4, Hiroki Miura1,5,6, Tetsuya Shishido1,5,6, Junya Ohyama1,7, Atsushi Satsuma1,7, Katsutoshi Sato1,8, Akira Yamamoto1,9, Satoshi Hinokuma1,10, Hiroshi Yoshida1,10, Masato Machida1,10, Seiji Yamazoe1,11, Tatsuya Tsukuda1,11, Kentaro Teramura1,2, Tsunehiro Tanaka1,2.
Abstract
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.Entities:
Year: 2017 PMID： 29224338 DOI： 10.1021/jacs.7b07114
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419