Oxygen Release and Storage Property of Fe–Al Spinel Compounds: A Three-Way Catalytic Reaction over a Supported Rh Catalyst

We evaluated the catalytic performance of the Rh–Fe/Al2O3 catalyst during a three-way catalytic reaction and found, by chance, that a part of Fe species was dissolved into the γ-Al2O3 support and worked as an oxygen storage material, which adjusts the oxygen concentration around the catalytically ac...

Full description

Saved in:
Bibliographic Details
Published in:ACS applied materials & interfaces 2021-06, Vol.13 (21), p.24615-24623
Main Authors: Fujita, Kyoko, Asakura, Hiroyuki, Hosokawa, Saburo, Teramura, Kentaro, Kobayashi, Masaki, Fujita, Koji, Tanaka, Tsunehiro
Format: Article
Language:English
Subjects:
Energy, Environmental, and Catalysis Applications
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We evaluated the catalytic performance of the Rh–Fe/Al2O3 catalyst during a three-way catalytic reaction and found, by chance, that a part of Fe species was dissolved into the γ-Al2O3 support and worked as an oxygen storage material, which adjusts the oxygen concentration around the catalytically active sites to a suitable level for three-way catalysis. In this study, we demonstrated that the Fe-doped γ-Al2O3 can reversibly store and release oxygen by the redox of Fe2+/Fe3+ at the tetrahedral (Td) site of the spinel structure without its structure deformation. The finding that a spinel-structured metal oxide, Fe-doped γ-Al2O3, could work as an oxygen storage material suggested a new opportunity for the development of oxygen storage materials without rare metals.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.1c01486