This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Methane and Nitric Oxide Conversion Over a Catalyst Dedicated for Natural Gas Vehicles
Technical Paper
2000-01-2928
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Methane and nitric oxide conversion was studied over a Pd-based catalyst at steady state conditions. The gas mixture contained methane (0.125 %), Nitric oxide (0.125 %), carbon monoxide (0.7 %), oxygen and argon as carrier gas. The experiments were performed in a well-stirred reactor (Berty reactor) which provided constant gas composition over the catalyst. Lambda scans from λ=1.01 to 0.99 and back performed by varying the oxygen content, revealed a hysteresis in both the methane conversion and the nitric oxide conversion. The temperature and presence of nitric oxide affected the hysteresis.
Complementary experiments in a synthetic exhaust gas rig revealed a more pronounced hysteresis in the presence of carbon dioxide and water.
An attempt to model the hysteresis effect as a function of the palladium and palladium-oxide transformations was made.
The effects are expected to have a strong influence on the light-off and low temperature performance on the emission control from natural gas fuelled vehicles.
Recommended Content
Authors
Topic
Citation
Andersson, B., Cruise, N., Lunden, M., and Hansson, M., "Methane and Nitric Oxide Conversion Over a Catalyst Dedicated for Natural Gas Vehicles," SAE Technical Paper 2000-01-2928, 2000, https://doi.org/10.4271/2000-01-2928.Also In
References
- Subramanian S. Kudla R. J. Chattha M. S. Ind. Eng. Chem. Res. 31 1992 2460 2465
- Lyubovsky M. Pfefferle L. Catalysis Today 47 1999 29 44
- Lyubovsky M. 1999
- Burch R. Crittle D.J. Hayes M.J. Catalysis Today 47 1999 229 234
- Mowery D.L. Graboski M.S. Ohno T.R. McCormick R.I. Appl. Catal. B: Environmental 21 1999 157 169
- Hick R.F. Qi H. Young M.L. Lee R.G. J. Catal. 122 1990 280
- Hick R.F. Qi H. Young M.L. Lee R.G. J. Catal. 122 1990 295
- Pocoroba E. Pettersson L.J. Agrell J. Boutonnet M. Jansson K. Congress on Catalysis and Automotive Pollution 5 Brussels April 12-14 2000
- Moallemi F. Batley G. Dupont V. Foster T,J. Pourkashanian M. Williams A. Catalysis Today 47 1999 235 244
- Olsson L. Westerberg B. Persson H. Fridell E. Skoglundh M. Andersson B. Journal of Physical Chemistry B 103 1999 10433 10439