In situ Raman spectroscopy evidence of an accessible phase potentially involved in the enhanced activity of La-deficient lanthanum orthoferrite in 3-way catalysis (TWC)
详细信息 查看全文
- 作者：Dimitri Blanck ; Anke Schö ; n ; Anne-Sophie Mamede ; Christophe Dujardin ; Jean-Philippe Dacquin ; Pascal Granger ; Jean-Franç ; ois Paul ; Elise Berrier ; Elise.Berrier@univ-lille1.fr
- 关键词：Raman ; In situ ; LaFeO3 ; 3-Way catalysis
- 刊名：Catalysis Today
- 出版年：2017
- 出版时间：1 April 2017
- 年：2017
- 卷：283
- 期：Complete
- 页码：151-157
- 全文大小：1460 K
- 卷排序：283
文摘
La-deficient La0.67FeO3 perovskite features original properties under H2O, CO and NO containing atmospheres. A iron (III+) oxide phase is reversibly formed at the surface of the La-deficient catalyst. Reversible iron segregation together with structural distortion favour the NO reduction in TWC.