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Periodic control fo...
Periodic control for improved low-temperature catalytic activity
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- Carlsson, Per-Anders, 1972 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Thormählen, Peter, 1969 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Skoglundh, Magnus, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Persson, Hans (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Fridell, Erik, 1963 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jobson, Edward, 1961 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Andersson, Bengt, 1947 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2001
- 2001
- English.
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In: Topics in Catalysis. - 1572-9028 .- 1022-5528. ; 16-17:1-4, s. 343-347
- Related links:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The influence of transient changes in the gas composition on the low-temperature activity of a commercial three-way catalyst and a Pt/Al2O3 model catalyst has been studied. By introducing well-controlled periodic O2 pulses to simple gas mixtures of CO or C3H6 (in N2), a substantial improvement of the low temperature oxidation activity was observed for both catalysts. The reason for low activity at low temperatures is normally attributed to self-poisoning by CO or hydrocarbons. The improved catalytic performance observed here is suggested to origin from the transients causing a surface reactant composition that is favourable for the reaction rate.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Keyword
- cold start emissions
- platinum
- catalytic oxidation
- periodic pulsing
- transient changes
- low temperature activity
- self-poisoning
- carbon monoxide
Publication and Content Type
- art (subject category)
- ref (subject category)
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