Role of cobalt on gamma-Al2O3 based NOx storage catalyst
SCIE
SCOPUS
- Title
- Role of cobalt on gamma-Al2O3 based NOx storage catalyst
- Authors
- Park, JH; Cho, HJ; Park, SJ; Nam, IS; Yeo, GK; Kil, JK; Youn, YK
- Date Issued
- 2007-05
- Publisher
- SPRINGER/PLENUM PUBLISHERS
- Abstract
- Co/Pt/Ba/gamma-Al2O3, Co/Ba/gamma-Al2O3, Pt/Ba/gamma-Al2O3, Co/Pt/gamma-Al2O3, Ba/gamma-Al2O3, Pt/gamma-Al2O3, and Co/gamma-Al2O3 type catalysts were prepared by a conventional impregnation method, and their NOx storage capacities were evaluated by colorimetric assay. Co-containing catalysts had a higher NO (x) storage capacity than that of Co-free counterparts. The role of each component, especially Co, for the catalysts prepared was investigated by using in-situ FTIR. The high NOx storage for Co-containing catalysts including Co/Ba/gamma-Al2O3 and Co/Pt/Ba/gamma-Al2O3 is mainly due to the formation of Co3O4 on the catalyst surface identified by XAFS.
- Keywords
- NSR; NOx storage capacity; Co-containing catalyst; in-situ FTIR; XAFS; REDUCTION; FTIR
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23371
- DOI
- 10.1007/s11244-007-0152-8
- ISSN
- 1022-5528
- Article Type
- Article
- Citation
- TOPICS IN CATALYSIS, vol. 42-43, no. 1-4, page. 61 - 64, 2007-05
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