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The local structure of yttrium in Y-doped BaCeO3 compounds was studied using X-ray absorption\ud spectroscopy (XAS) at the Y K-edge. Data analysis shows that the local environment of Y3+ changes,\ud resulting in a distorted octahedron. The structural distortion found does not depend on the dopant amount\ud at the investigated compositions, but on the level of hydration, as clearly demonstrated by the distortion\ud increase in the BaCe0.9Y0.1O3-ä sample after the treatment in O2/H2O. In situ measurements performed\ud in O2/H2O flux, which show that the distortion is retained at 753 K, are also reported. The observed\ud significative structural changes seem to point out a preferential insertion of the hydroxyls around the\ud dopant in the Y-doped BaCeO3 compounds

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AAM) is copyrighted and published by Elsevier. It is posted here by agreement between Elsevier and the University of Turin. Changes resulting from the publishing process -such as editing, corrections, structural formatting, and other quality control mechanisms -may not be reflected in this version of the text. The definitive version of the text was subsequently published in APPLIED CATALYSIS. B, ENVIRONMENTAL, None, 2017, 10.1016/j.apcatb.2017.02.007.You may download, copy and otherwise use the AAM for non-commercial purposes provided that your license is limited by the following restrictions:(1) You may use this AAM for non-commercial purposes only under the terms of the CC-BY-NC-ND license.(2) The integrity of the work and identification of the author, copyright owner, and publisher must be preserved in any copy.

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