In situ Preparation and Investigation of Pd/CeO2 Catalysts for the Low-Temperature Oxidation of CO Full article
| Journal |
Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875 |
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| Output data | Year: 2012, Volume: 439-440, Pages: 41 -50 Pages count : 10 DOI: 10.1016/j.apcata.2012.06.045 | ||||
| Tags | CeO 2, Ceria, Low-temperature CO oxidation, Palladium, Pd, Surface phase, XAS, XPS | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | The Ministry of Education and Science of the Russian Federation | 14.740.11.0419 |
| 2 | Helmholtz-Centre Berlin for Materials and Energy BESSY | 2010_1_91049 |
Abstract:
The formation of Pd0.05Ce0.95O2 catalysts for the low-temperature oxidation of CO by the thermal decomposition of Ce(NO3)3 and Pd(NO3)2 with oxygen was studied by X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) directly in the preparation chamber of a spectrometer. Palladium is represented by two species on the surface of the catalysts: solid solutions of PdxCe1−xO2−δ and palladium clusters. Pd clusters can be formed in an oxidized or reduced state depending on the reaction conditions. Treatment of the catalysts with hydrogen leads to a sharp increase in CO conversion because of the reduction of parts of the palladium accompanying the formation of the metallic clusters. The testing of “real” and model catalysts was conducted in a light-off mode. The correlation between the activity of the Pd/CeO2 catalysts and the states of the palladium was proposed.
Cite:
Gulyaev R.V.
, Stadnichenko A.I.
, Slavinskaya E.M.
, Ivanova A.S.
, Koscheev S.V.
, Boronin A.I.
In situ Preparation and Investigation of Pd/CeO2 Catalysts for the Low-Temperature Oxidation of CO
Applied Catalysis A: General. 2012. V.439-440. P.41 -50. DOI: 10.1016/j.apcata.2012.06.045 WOS Scopus РИНЦ OpenAlex ANCAN
In situ Preparation and Investigation of Pd/CeO2 Catalysts for the Low-Temperature Oxidation of CO
Applied Catalysis A: General. 2012. V.439-440. P.41 -50. DOI: 10.1016/j.apcata.2012.06.045 WOS Scopus РИНЦ OpenAlex ANCAN
Dates:
| Submitted: | Jan 31, 2012 |
| Accepted: | Jun 22, 2012 |
| Published online: | Jul 3, 2012 |
| Published print: | Oct 1, 2012 |
Identifiers:
| ≡ Web of science: | WOS:000308731400006 |
| ≡ Scopus: | 2-s2.0-84865137437 |
| ≡ Elibrary: | 20495119 |
| ≡ OpenAlex: | W1966061923 |
| ≡ Chemical Abstracts: | 2012:1037145 |
| ≡ Chemical Abstracts (print): | 157:445390 |