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Effect of the Reduction Step on the Catalytic Performance of Pd-CeMO Based Catalysts (M = Gd, Zr) for Propane Combustion.
- Source :
-
Topics in Catalysis . Oct2016, Vol. 59 Issue 17/18, p1638-1650. 13p. 2 Diagrams, 6 Charts, 8 Graphs. - Publication Year :
- 2016
-
Abstract
- The effect of a reduction step on the catalytic activity of Pd supported doped ceria catalysts was investigated for the propane combustion. Two different oxides based on ceria zirconia (CZ), as a reference three-way catalyst support, and Gadolinia doped ceria (GDC), a mixed ionic electronic conductor, have been used to support Pd nanoparticles. The samples were characterized by H-CO chemisorption, temperature programmed reduction, and XPS. In addition, the reduction step in H was in situ observed by environmental transmission electron microscopy. It was found that the catalytic activity of Pd supported on ceria-based supports can be strongly promoted by a reduction step whereas it does not change on alumina. This effect was attributed, in particular on GDC, to the reduction of a surface interaction phase, PdCeO, which induces a re-dispersion of metallic Pd nanoparticles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10225528
- Volume :
- 59
- Issue :
- 17/18
- Database :
- Academic Search Index
- Journal :
- Topics in Catalysis
- Publication Type :
- Academic Journal
- Accession number :
- 118481303
- Full Text :
- https://doi.org/10.1007/s11244-016-0683-y