Experimental study of CO and propylene co-oxidation on Pt/Al2O3
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F17%3A43914097" target="_blank" >RIV/60461373:22340/17:43914097 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Experimental study of CO and propylene co-oxidation on Pt/Al2O3
Original language description
The world?s concerns about global warming and undesirable impact of pollutants contained in the exhaust gases on human health lead to gradual tightening of emission limits. Ideally, there is a complete oxidation of fuel to carbon dioxide and water steam during the combustion process. However, there are several undesired by-products due to side reactions. The most significant pollutants in the automotive exhaust gas are carbon monoxide, nitrogen oxides, unburnt hydrocarbons and particulate matter (soot). These components need to be converted into non-toxic nitrogen, carbon dioxide and water using the exhaust gas catalyst. This study is focused on the study of reaction mechanism leading to so called double CO light-off effect. Normally, the CO conversion monotonously increases with temperature as the rate coefficient exponentially increases. However, it has been observed that under certain operating conditions the CO conversion increase in the complete exhaust gas mixture may stop or even reverse in a range of temperatures, and the increase of CO conversion and is achieved again only at much higher temperature. It was reported that during propene oxidation several intermediates appear on the catalyst surface, especially formate (HCCO-) and acetate (CH3OO-). These constituents may accumulate on the catalyst surface and block active platinum sites (Hazlett & Epling, 2016), leading to inhibition of CO oxidation rate. The inhibition diminishes after their complete oxidation at higher temperature. In this paper we investigate the impact of propene oxidation and amount of other constituents in the exhaust gas mixture (namely O2 and NO) on the CO light-off behavior. 64?2000 znaků. Anotace nesmí být totožná s názvem.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20401 - Chemical engineering (plants, products)
Result continuities
Project
<a href="/en/project/GA17-26018S" target="_blank" >GA17-26018S: Low temperature reaction kinetics in oxidation catalysts for diesel exhaust gas aftertreatment</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
PROCEEDINGS 44th International Conference of the Slovak Society of Chemical Engineering
ISBN
978-80-89597-58-1
ISSN
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e-ISSN
neuvedeno
Number of pages
7
Pages from-to
760-766
Publisher name
Slovak Society of Chemical Engineering
Place of publication
Bratislava
Event location
Demänovská dolina
Event date
May 22, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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