Preparation and performance of multi-layer Lean NOx trap catalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F15%3A43900079" target="_blank" >RIV/60461373:22340/15:43900079 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation and performance of multi-layer Lean NOx trap catalysts

Popis výsledku v původním jazyce

Lean NOx trap (LNT) catalyst is an effective tool for removal of nitrogen oxides (NOx) from automotive exhaust gas. The NOx are stored on the active sites of the LNT and released and reduced when the storage capacity is fulfilled. The process is controlled by periodical changing of the air/fuel ratio. The LNT needs to be combined with other types of catalysts, e.g. an oxidation catalyst (DOC) for conversion of CO and hydrocarbons or a particulate filter. Due to spatial and economical reasons there is aneffort to combine catalysts with different functions in a single monolith reactor, the walls of the monolith being coated with multiple layers of catalysts. However, when the porous layer is too thick, the overall efficiency is influenced by diffusion limitations. Whereas the chemical formulations of the catalysts have been finely tuned by the manufacturers, the role of the transport has not been fully investigated. This work is focused on preparation of model LNT catalysts coated on fl

Název v anglickém jazyce

Preparation and performance of multi-layer Lean NOx trap catalysts

Popis výsledku anglicky

Lean NOx trap (LNT) catalyst is an effective tool for removal of nitrogen oxides (NOx) from automotive exhaust gas. The NOx are stored on the active sites of the LNT and released and reduced when the storage capacity is fulfilled. The process is controlled by periodical changing of the air/fuel ratio. The LNT needs to be combined with other types of catalysts, e.g. an oxidation catalyst (DOC) for conversion of CO and hydrocarbons or a particulate filter. Due to spatial and economical reasons there is aneffort to combine catalysts with different functions in a single monolith reactor, the walls of the monolith being coated with multiple layers of catalysts. However, when the porous layer is too thick, the overall efficiency is influenced by diffusion limitations. Whereas the chemical formulations of the catalysts have been finely tuned by the manufacturers, the role of the transport has not been fully investigated. This work is focused on preparation of model LNT catalysts coated on fl

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of 42nd International Conference of Slovak Society of Chemical Engineering

ISBN

978-80-89475-14-8

ISSN

—

e-ISSN

—

Počet stran výsledku

9

Strana od-do

369-377

Název nakladatele

J. Markoš, V. Štefuca

Místo vydání

Bratislava

Místo konání akce

Tatranské Matliare

Datum konání akce

25. 5. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—