Rare earth (La, Nd, Pr) doped ceria zirconia solid solutions for soot combustion
|Title:||Rare earth (La, Nd, Pr) doped ceria zirconia solid solutions for soot combustion||Authors:||Dulgheru, Petrica
Sullivan, James A.
|Permanent link:||http://hdl.handle.net/10197/4256||Date:||May-2013||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||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engines;Soot oxidation;DRIFTS spectroscopy;TGA||DOI:||10.1007/s11244-013-0006-5||Language:||en||Status of Item:||Not peer reviewed|
|Appears in Collections:||Chemistry Research Collection|
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