Active three-way catalysis of rhodium particles with a low oxidation state maintained under an oxidative atmosphere on a La-containing ZrO2 support

Hisaya Kawabata; Yuki Koda; Hirosuke Sumida; Masahiko Shigetsu; Akihide Takami; Kei Inumaru

doi:10.1039/C3CC00006K

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Active three-way catalysis of rhodium particles with a low oxidation state maintained under an oxidative atmosphere on a La-containing ZrO₂ support†

Hisaya Kawabata,*^a Yuki Koda,^a Hirosuke Sumida,^a Masahiko Shigetsu,^a Akihide Takami^a and Kei Inumaru^b

Author affiliations

* Corresponding authors

^a Advanced Materials Research Field, Technical Research Center, Mazda Motor Corporation, 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima 730-8670, Japan
E-mail: kawabata.h@mazda.co.jp
Fax: +81-82-252-5068
Tel: +81-82-252-5342

^b Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
E-mail: inumaru@hiroshima-u.ac.jp
Fax: +81-82-424-5494
Tel: +81-82-424-7741

Abstract

Rhodium on a La-containing ZrO₂ support effectively eliminated NO_x from a synthetic auto exhaust gas under fluctuating oxygen conditions. Rhodium particles maintained a low oxidation state on the ZrO₂–La₂O₃ mixed oxide even after treatment with 5% O₂ at 773 K, highlighting the significant effect of the La addition.

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Article information

DOI: https://doi.org/10.1039/C3CC00006K
Article type: Communication
Submitted: 01 Jan 2013
Accepted: 25 Mar 2013
First published: 25 Mar 2013

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Chem. Commun., 2013,49, 4015-4017

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Active three-way catalysis of rhodium particles with a low oxidation state maintained under an oxidative atmosphere on a La-containing ZrO₂ support

H. Kawabata, Y. Koda, H. Sumida, M. Shigetsu, A. Takami and K. Inumaru, Chem. Commun., 2013, 49, 4015 DOI: 10.1039/C3CC00006K

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Chemical Communications