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Träfflista för sökning "WFRF:(Amberntsson Annika 1974) srt2:(1999)"

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1.	Amberntsson, Annika, 1974 (author) Studies of storage and release processes of NOx in barium and platinum containing catalysts 1999 Licentiate thesis (other academic/artistic)
2.	Amberntsson, Annika, 1974, et al. (author) Sulphur dioxide deactivation of NOx storage catalysts 1999 In: Studies in Surface Science and Catalysis. - 0167-2991. ; 126, s. 317-324 Journal article (peer-reviewed)abstract The influence of sulphur dioxide on the NOx storage performance of a Pt-Rh/BaO/Al2O3 model catalyst has been investigated. Addition of 2.5-25 vol.-ppm SO2 to a synthetic lean-burn exhaust, containing NO, C3H6, O2 and Ar, caused deactivation of the NOx storage function of the catalyst. The rate of deactivation was found to be proportional to the exposure of SO2. This effect is seen for temperatures between 250 and 450 degrees C. Together with in situ FTIR measurements, this leads to the conclusion that sulphur accumulates in the NOx storage component of the catalyst during the exposure. Furthermore, SO2 also inhibits the oxidation capacity of the catalyst during lean periods as is observed by a decreased NO oxidation activity. The presence of SO2 also reduces the reduction capacity of the catalyst under rich periods, which leads to an increased N2O formation and a decreased NO conversion.
3.	Engström, Per, et al. (author) Sulphur dioxide deactivation of NOx storage catalysts 1999 In: 8th International Symposium on Catalyst Deactivation in Brugge, Belgium, October 11-13, 1999. Conference paper (peer-reviewed)
4.	Engström, Per, et al. (author) Sulphur dioxide interaction with NOx storage catalysts 1999 In: Applied Catalysis B: Environmental. - 0926-3373 .- 1873-3883. ; 22:4, s. L241-L248 Journal article (peer-reviewed)abstract The effect of SO2 on the NOx storage capacity and oxidation and reduction activities of a model Pt/Rh/BaO/Al2O3 NOx storage catalyst was investigated. Addition of 2.5, 7.5 or 25 vol. ppm SO2 to a synthetic lean exhaust gas caused deactivation of the NOx storage function, the oxidation activity and the reduction activity of the catalyst. The degree of deactivation of the NOx storage capacity was found to be proportional to the total SO2 dose that the catalyst had been exposed to. SO2 was found to be accumulated in the catalyst as sulphate.
5.	Fridell, Erik, 1963, et al. (author) Model studies of NOx storage and reduction of nitrogen oxides 1999 In: 4th European Congress on Catalysis (EUROPACAT-IV) in Rimini, Italy, September 5-10, 1999.. Conference paper (peer-reviewed)

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Type of publication: conference paper (2); journal article (2); licentiate thesis (1)

Type of content: peer-reviewed (4); other academic/artistic (1)

Author/Editor: Amberntsson, Annika, ... (5); Fridell, Erik, 1963 (4); Skoglundh, Magnus, 1 ... (4); Engström, Per (4); Westerberg, Björn, 1 ... (2); Johansson, Stefan, 1 ... (1); show more...; Smedler, Gudmund, 19 ... (1); Persson, Hans (1); Kasemo, Bengt Herber ... (1); Andersson, Bengt, 19 ... (1); Cruise, Neil, 1969 (1); Johansson, Louise (1); show less...

University: Chalmers University of Technology (5)

Language: English (5)

Research subject (UKÄ/SCB): Engineering and Technology (5); Natural sciences (1)

Year: 1999 (5)Undo refine

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