The interaction of hydrogen and carbon monoxide with oxygen on Cu(110)-Fe surfaces |
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| Affiliation: | 1. Department of Insurance and Risk Management, College of Economics and Administrative Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box 5701, Riyadh, Saudi Arabia;2. GEF2A Laboratory, ISG Tunis, University of Tunis, Tunisia;3. ISIG Kairouan, University of Kairouan, Tunisia;4. LaREMFIQ Laboratory, University of Sousse, Tunisia;1. Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Surathkal, Karnataka, India;2. Department of Materials and Metallurgical Engineering, Institute of Technology and Engineering, Indus University, Ahmedabad 382115, India;1. Institut de Recerca en Energia de Catalunya (IREC), Jardins de les Dones de Negre, 1, 2ª pl., 08930, Sant Adrià de Besòs, Barcelona, Spain;2. Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy;3. Faculty of Electronics, Telecommunications and Informatics, Gdańsk University of Technology, ul. G. Narutowicza 11/12, 80-233, Gdańsk, Poland;4. AGH University of Science and Technology, al. Mickiewicza 30, 30-059, Krakow, Poland;5. Sunfire GmbH, Gasanstaltstraße 2, 01237, Dresden, Germany;6. Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstr. 6, 91058, Erlangen, Germany;1. National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, PR China;2. State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China;3. School of Environment and Materials Engineering, Yantai University, Yantai 264003, PR China |
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| Abstract: | The interaction of hydrogen and carbon monoxide with oxygen adsorbed on Cu(110)-Fe surfaces has been studied with ellipsometry, Auger electron spectroscopy and low energy electron diffraction. With carbon monoxide copper can be reduced completely and Fe0.95O partially. With a model which is only an extension of the scheme for the reduction of pure Cu(110) by CO, the reduction of Cu(110)-Fe can be simulated. The lateral orientation of Fe0.95O with respect to the copper matrix changes during repetitive oxidation-reduction cycles. At 725 K oxygen deficient iron oxide segregates to the surface. With hydrogen all oxygen can be removed. |
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