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A nanophase oxygen storage material: Alumina-coated metal-based ceria
KTH, School of Information and Communication Technology (ICT), Material Physics (Closed 20120101), Functional Materials, FNM (Closed 20120101).
KTH, School of Information and Communication Technology (ICT), Material Physics (Closed 20120101), Functional Materials, FNM (Closed 20120101).
KTH, School of Information and Communication Technology (ICT), Material Physics (Closed 20120101), Functional Materials, FNM (Closed 20120101).
KTH, School of Information and Communication Technology (ICT), Material Physics (Closed 20120101), Functional Materials, FNM (Closed 20120101).
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2009 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 29, no 4, 677-689 p.Article in journal (Refereed) Published
Abstract [en]

Nanoparticles of Ce1-xMxO2-delta (M = Ca or Zr) coated with Al2O3 with average crystallite size of 10 nm have been synthesised via solution chemistry approach under controlled chemical and hydrodynamic conditions. Their synthesis has been accomplished in three major steps: (1) simultaneous co-precipitation of cations, (2) sequential precipitation of Al(OH)(3) over the former particles and (3) calcination of the precipitated precursors to the corresponding oxides. Several compositions have been synthesised and their physicochemical properties are compared with commercial state-of-the-art material. The Al2O3-coating hinders the particles growth at high temperatures, resulting in materials with a large specific surface area and a restrain in the decrease of their oxygen storage capacity.

Place, publisher, year, edition, pages
2009. Vol. 29, no 4, 677-689 p.
Keyword [en]
Calcination, Composites, Nanocomposites, CeO2, Grain size, solid-solution, catalysts, ceo2, promoters, oxidation, capacity, behavior, oxides, system
Identifiers
URN: urn:nbn:se:kth:diva-18112DOI: 10.1016/j.jeurceramsoc.2008.07.017ISI: 000262573100018OAI: oai:DiVA.org:kth-18112DiVA: diva2:336158
Note

QC 20100525

Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2016-12-19Bibliographically approved

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Adamopoulos, OthonBjörkman, EvaZhang, YuMuhammed, Mamoun
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