The influence of modifying additions of La and Ce oxides on electronic state of surface atoms and ions of supported copper

A. N. Pestryakov, A. A. Davydov

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Abstract

The electronic state of surface of supported copper in modified copper catalysts has been tested by the methods of IR-spectroscopy of adsorbed CO, X-ray diffraction analysis and electron microscopy. The modifying additions of cerium oxide stabilize the ionic state of copper, while lanthanum oxide decreases the effective charge of Cu+ ions. The observed effects are caused by variation in metal dispersivity in the modified samples and by electron donor-acceptor interaction of the surface atoms and ions of copper with the modifier.

Original languageEnglish
Pages (from-to)479-483
Number of pages5
JournalApplied Surface Science
Volume103
Issue number4
DOIs
Publication statusPublished - Dec 1996

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics

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