Sökning: WFRF:(Johansson Stefan 1963 ) >
Influence of the pl...
Influence of the platinum-support interaction on the direct reduction of NOx under lean conditions
-
- Acke, Filip, 1968 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Westerberg, Björn, 1962 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Eriksson, Lars, 1965 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
visa fler...
-
- Johansson, Stefan, 1967 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Skoglundh, Magnus, 1965 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Fridell, Erik, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Smedler, Gudmund, 1956 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
visa färre...
-
(creator_code:org_t)
- 1998
- 1998
- Engelska.
-
Ingår i: Studies in Surface Science and Catalysis. - 0167-2991. ; 116, s. 285-294
- Relaterad länk:
-
https://research.cha...
Abstract
Ämnesord
Stäng
- Catalysts containing Pt supported on SiC, Al2O3 and ZSM-5 were prepared and studied for NOx reduction by C3H6 in Oz excess under transient (temperature ramps) and steady-state conditions. The maximum NOx reduction activity in the heating ramp experiments was similar for Pt/SiC and Pt/ZSM-5, while Pt/Al2O3 showed higher maximum activity. Both N-2 and N2O formation was observed for all catalysts, although the respective amounts varied with the investigated system. Highest Nz selectivity was observed for Pt/Al2O3. When the NOx reduction activity was studied under steady-state conditions the activity of Pt/Al2O3 decreased substantially (mainly due to a loss in N-2 production). Pt/ZSM-5 became somewhat more selective towards Na production whereas the activity and selectivity of Pt/SiC remained at about the same values as far the heating ramp experiments. Adsorbed species on the surface of the different catalysts were investigated using in-situ FTIR in order to obtain information about the reaction mechanisms. The adsorption of species on Pt/SiC was negligible, while a number of absorption bands were observed for Pt/Al2O3 (N and C containing species, and -NCO) and Pt/ZSM-5 (HC).
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Nyckelord
- HYDROCARBONS
- SELECTIVE CATALYTIC REDUCTION
- PROPYLENE
- EXCESS OXYGEN
- ADSORPTION
- SPECTROSCOPY
- NITRIC-OXIDE
- CO
- RH/AL2O3
- STABILITY
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Acke, Filip, 196 ...
-
Westerberg, Björ ...
-
Eriksson, Lars, ...
-
Johansson, Stefa ...
-
Skoglundh, Magnu ...
-
Fridell, Erik, 1 ...
-
visa fler...
-
Smedler, Gudmund ...
-
visa färre...
- Om ämnet
-
- TEKNIK OCH TEKNOLOGIER
-
TEKNIK OCH TEKNO ...
-
och Kemiteknik
- Artiklar i publikationen
-
Studies in Surfa ...
- Av lärosätet
-
Chalmers tekniska högskola