Journal Pre-proofs Full Length Article Cu-Ce-La-O x as efficient CO oxidation catalysts: effect of Cu content Maitha AlKetbi, Kyriaki Polychronopoulou, Maguy Abi Jaoude, Michalis A. Vasiliades, Victor Sebastian, Steven J. Hinder, Mark A. Baker, Abdallah F. Zedan, Angelos M. Efstathiou PII: S0169-4332(19)33290-8 DOI: https://doi.org/10.1016/j.apsusc.2019.144474 Reference: APSUSC 144474 To appear in: Applied Surface Science Received Date: 19 July 2019 Revised Date: 17 October 2019 Accepted Date: 21 October 2019 Please cite this article as: M. AlKetbi, K. Polychronopoulou, M. Abi Jaoude, M.A. Vasiliades, V. Sebastian, S.J. Hinder, M.A. Baker, A.F. Zedan, A.M. Efstathiou, Cu-Ce-La-O x as efficient CO oxidation catalysts: effect of Cu content, Applied Surface Science (2019), doi: https://doi.org/10.1016/j.apsusc.2019.144474 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Elsevier B.V. All rights reserved.