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  5. Rare earth (La, Nd, Pr) doped ceria zirconia solid solutions for soot combustion
 
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Rare earth (La, Nd, Pr) doped ceria zirconia solid solutions for soot combustion

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Author(s)
Dulgheru, Petrica 
Sullivan, James A. 
Uri
http://hdl.handle.net/10197/4256
Date Issued
May 2013
Date Available
28T04:00:08Z February 2014
Abstract
A series of rare earth (RE) (La, Nd, Pr) ceria zirconia materials were analysed for their soot combustion activity in air and in NO/O2. The materials were characterised using DRIFT spectroscopy. In general the presence of the RE dopant increases the activity of undoped CexZr1-xO2. The La and Pr doped catalysts showed increased low temperature activity in the presence of NO/O2 while the effect was less pronounced in case of Nd - doped samples. FTIR data has shown that the catalysts interact differently to NO/O2 mixtures in that they do not form significant quantities of adsorbed nitrite-type species. We postulate that this species is a precursor to NO2 formation which in turn increases soot combustion.
Type of Material
Journal Article
Publisher
Springer
Journal
Topics in Catalysis
Volume
56
Issue
1-8
Start Page
504
End Page
510
Copyright (Published Version)
2013 Springer
Keywords
  • Lean burn

  • Rare earth oxides

  • Soot

  • Particulate matter

  • Diesel engines

  • Soot oxidation

  • DRIFTS spectroscopy

  • TGA

DOI
10.1007/s11244-013-0006-5
Language
English
Status of Item
Not peer reviewed
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Chemistry Research Collection
Scopus© citations
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