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Surface area stability of lanthanum-doped ceria

Abstract : High surface area ceria was doped with lanthanum ions and calcined at 900 K under various partial pressures of oxygen and water vapour. The kinetic rates of crystallite size increase were observed to vary as . By addition of 0.5 and 1% of lanthanum ions, the rates were lowered, and then significantly decreased for 10% (cat.). A model of this process involved association between lanthanum ions and oxygen vacancies in order to explain the better stability of doped ceria.
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https://hal-emse.ccsd.cnrs.fr/emse-00610365
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Submitted on : Thursday, July 21, 2011 - 4:35:55 PM
Last modification on : Wednesday, June 24, 2020 - 4:18:16 PM

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Michèle Pijolat, Marie-Agnès Prin, Michel Soustelle, Olivier Touret, Patrice Nortier. Surface area stability of lanthanum-doped ceria. Solid State Ionics, Elsevier, 1993, 63-65, pp.781-785. ⟨10.1016/0167-2738(93)90196-A⟩. ⟨emse-00610365⟩

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