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Relating catalyst structure and composition to the water–gas shift activity of Cu–Zn-based mixed-oxide catalysts
- Source :
-
Catalysis Today . Feb2005, Vol. 100 Issue 3/4, p249-254. 6p. - Publication Year :
- 2005
-
Abstract
- Abstract: In order to investigate the effect of cerium oxide on Cu–Zn-based mixed-oxide catalysts four catalyst samples were characterized by means of XRD, in situ XANES and thermogravimetric analysis. The activity of the catalyst samples was tested for the forward water–gas shift reaction. Cerium oxide was found to increase the crystallinity of the ZnO phase indicating a segregation of the Cu and ZnO phases. The TOF of the water–gas shift reaction based on chemisorption data was found to be independent of composition and preparation conditions of the four catalyst samples. In contrast, the catalyst stability depends on composition and preparation conditions. Cerium oxide impregnated before calcination of the hydrotalcite-based Cu–Zn precursors leads to a more stable water–gas shift catalyst. [Copyright &y& Elsevier]
- Subjects :
- *CERIUM oxides
*BASTNAESITE
*CHEMICAL inhibitors
*CATALYSTS
Subjects
Details
- Language :
- English
- ISSN :
- 09205861
- Volume :
- 100
- Issue :
- 3/4
- Database :
- Academic Search Index
- Journal :
- Catalysis Today
- Publication Type :
- Academic Journal
- Accession number :
- 17674575
- Full Text :
- https://doi.org/10.1016/j.cattod.2004.09.059