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Topics in Catalysis
Published in: Topics in Catalysis 1-8/2013

01-05-2013 | Original Paper

Effect of Soot During Operation of a Pt–K/Al2O3 LNT Catalyst

Authors: R. Matarrese, L. Lietti, L. Castoldi, G. Busca, P. Forzatti

Published in: Topics in Catalysis | Issue 1-8/2013

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Abstract

The effect of soot on the NO x storage-reduction performances of a Pt–K/Al2O3 catalyst is analysed in this work by performing lean-rich cycles at constant temperature. The interaction between soot and the stored NO x has been also investigated by temperature programmed methods. It has been found that the presence of soot reduces the NO x storage capacity of the catalyst; besides the presence of soot favours the decomposition of the stored nitrates. A direct reaction between the stored nitrates and soot is suggested, that has been explained on the basis of the surface mobility of the adsorbed nitrates.
previous article A Novel α-Al2O3 Diesel Particulate Filter with Alkali Metal-Based Catalyst for Diesel Soot Oxidation
next article In-Operation Monitoring of the Soot Load of Diesel Particulate Filters: Initial Tests

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Metadata
Title
Effect of Soot During Operation of a Pt–K/Al2O3 LNT Catalyst
Authors
R. Matarrese
L. Lietti
L. Castoldi
G. Busca
P. Forzatti
Publication date
01-05-2013
Publisher
Springer US
Published in
Topics in Catalysis / Issue 1-8/2013
Print ISSN: 1022-5528
Electronic ISSN: 1572-9028
DOI
https://doi.org/10.1007/s11244-013-0001-x

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