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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 370 (1969), S. 40-48 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The catalytic and electronic properties of Cr2O3—ZrO2 mixed oxides are dependent on the concentration of Cr5+ ions and the ratio Cr5+: Cr3+, respectively. The catalytic activity appears to be due to an electronic collision mechanism, while the observed lowering of the activation energy of electronic conductivity may be interpreted on the basis of a hopping-exchange process between Cr3+ and Cr5+.
    Notes: Die katalytischen und elektronischen Eigenschaften von Cr2O3—ZrO2-Mischoxiden werden von der Konzentration an Cr5+-Ionen bzw. von dem Verhältnis Cr5+/Cr3+ beeinflußt. Die katalytische Aktivität kann auf einen Elektronenstoßmechanismus zurückgeführt werden, während die Erniedrigung der Aktivierungsenergie der Leitfähigkeit durch einen Ladungsaustausch zwischen Cr3+ und Cr5+ interpretiert wird.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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