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Methane combustion activity of unsupported PdO–ZrO2 binary oxides
- Source :
- Catalysis Communications. 10:192-195
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- Methane combustion activity of unsupported PdO– n ZrO 2 binary oxides (0 ⩽ n ⩽ 2) was studied in connection with the reduction/reoxidation behavior of Pd. The addition of small amount of ZrO 2 ( n = 0.1) significantly improved the catalyst light-off characteristics by accelerating the reoxidation step in the redox cycles of Pd species. The effect would be associated with the formation of highly oxidized Pd species on the PdO/ZrO 2 interface, which may increase the rate of oxygen exchange between gas and solid phases.
Details
- ISSN :
- 15667367
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Catalysis Communications
- Accession number :
- edsair.doi...........9f9acc6b700a7f5ca427018327a3c2ae