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Enhanced methane co...
Enhanced methane conversion under periodic operation over a Pd/Rh based TWC in the exhausts from NGVs
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- Bounechada, Djamela, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Groppi, Gianpiero (author)
- Politecnico di Milano,Polytechnic University of Milan
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- Forzatti, Pio (author)
- Politecnico di Milano,Polytechnic University of Milan
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Kallinen, Kauko (author)
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Kinnunen, Toni (author)
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(creator_code:org_t)
- 2013-03-01
- 2013
- English.
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In: Topics in Catalysis. - : Springer Science and Business Media LLC. - 1572-9028 .- 1022-5528. ; 56:1-8, s. 372-377
- Related links:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The enhancement of methane oxidation performances under periodic operation over a commercial Pd–Rh based three way catalyst (TWC) is investigated at different temperatures. Results confirm that under conditions with periodic oscillating feed around stoichiometry (λ = 1 ± 0.02), higher and more stable CH4 conversion are obtained than under conditions with constant stoichiometric feed. In particular higher CH4 conversion is obtained in the rich part of the cycle than in the lean one, the difference being more pronounced at high temperature. A narrow turning point for the TWC activity is finally observed under slightly rich conditions, which is characterised by a marked increase of CH4 conversion, paralleled by total consumption of O2 and NO and formation of small amounts of CO, H2 and NH3. Results suggest that the oxidation state of palladium plays a key role in the observed enhancement of catalyst performances.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
Keyword
- Natural gas vehicles Methane oxidation Pd–Rh based catalyst Periodic operation Lambda oscillations
Publication and Content Type
- art (subject category)
- ref (subject category)
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