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Light-off performan...
Light-off performance over cobalt oxide- and ceria-promoted platinum and palladium catalysts
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- Skoglundh, Magnus, 1965 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Törncrona, Anders, 1967 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Thormählen, Peter, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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visa fler...
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- Fridell, Erik, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Drewsen, Astrid, 1971 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jobson, Edward, 1961 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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visa färre...
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(creator_code:org_t)
- 1998
- 1998
- Engelska.
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Ingår i: Studies in Surface Science and Catalysis. - 0167-2991. ; 116, s. 113-122
- Relaterad länk:
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https://research.cha...
Abstract
Ämnesord
Stäng
- Monolith catalysts containing Co, Ce, Pt and Pd supported on alumina were prepared and tested with respect to low-temperature activity for oxidation of CO and propene. The catalysts were either pre-oxidised or pre-reduced prior to evaluation with respect to light-off performance, using net oxidising and net reducing CO/C3H6/O2/N2 gas mixtures. Promotion of Pt and Pd with cobalt or cerium oxide, favoured the low temperature activity significantly. Pre-reduction of Co- and Ce-promoted noble metals shifted the conversion starts of CO and propene toward lower temperatures compared with pre-oxidised samples. Pre-reduction of cobalt oxide, without Pt or Pd, yielded a dramatic improvement of the low-temperature catalytic performance compared with pre-oxidation of the said oxide. The catalysts were characterised by temperature programmed desorption of CO and specific surface area measurements. The high activity over the pre-reduced cobalt containing catalysts is suggested to be due to the presence of reduced cobalt oxide sites on those samples.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Nyckelord
- TEMPERATURE
- CO OXIDATION
- NO REDUCTION
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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