Modeling of varying Pt sites activity for NO oxidation in automotive exhaust gas catalysts
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F15%3A43900095" target="_blank" >RIV/60461373:22340/15:43900095 - 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
Modeling of varying Pt sites activity for NO oxidation in automotive exhaust gas catalysts
Original language description
This study deals with modeling of reversible deactivation of a diesel oxidation catalyst (DOC) due to the platinum oxide (PtOx) formation. The deactivation effect is observed during the catalytic NO oxidation under lean conditions. The PtOx formation iscaused by O2 and NO2 present in the gas mixture. The catalytic NO oxidation during a sequential heat-up and cool-down experiments exhibits an inverse hysteresis. During isothermal NO oxidation, gradual decrease of the activity is observed directly and the steady state of PtOx formation is achieved only after several hours. Platinum oxide can be reduced by NO at low temperatures even in the oxidative atmosphere or thermally decomposed at temperatures above 350 oC. Within this study, it was found out thatPtOx can be reduced during NO oxidation also by CO C3H6 below their light-off temperature. The subject of this study was to extend standard global kinetic model of diesel oxidation catalyst by the reactions considering PtOx formation, re
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2015
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 of 42nd International Conference of Slovak Society of Chemical Engineering
ISBN
978-80-89475-14-8
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
626-632
Publisher name
J. Markoš, V. Štefuca
Place of publication
Bratislava
Event location
Tatranské Matliare
Event date
May 25, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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