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  • 1
    Publication Date: 1969-04-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 366 (1969), S. 51-63 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The substitution equilibrium between ZnFe2O4 and NiO, \documentclass{article}\pagestyle{empty}\begin{document}$${\rm ZnFe}_2 {\rm O}_{\rm 4} + {\rm NiO} = {\rm NiFe}_2 {\rm O}_4 + {\rm ZnO},$$\end{document} should be studied. For this purpose a mixture of ZnFe2O4 and NiO with the mole ratio 1:1 was fired in dependence on temperature and time. The final products were controlled by measurement of saturation magnetization and CURIE temperatures and by evaluation of X-ray diffractometric measurements. The values obtained from the measurements of saturation magnetization have been evaluated by several kinetic equations, from which was calculated the activation energy of the reaction. A short thermodynamical consideration is included.
    Notes: Das Substitutionsgleichgewicht zwischen ZnFe2O4 und NiO, \documentclass{article}\pagestyle{empty}\begin{document}$${\rm ZnFe}_2 {\rm O}_{\rm 4} + {\rm NiO} = {\rm NiFe}_2 {\rm O}_4 + {\rm ZnO},$$ \end{document} sollte untersucht werden. Hierzu wurde eine Mischung von ZnFe2O4 und NiO im Molverhältnis 1:1 temperatur- und zeitabhängig geglüht. Die Untersuchung der Endprodukte erfolgte durch Messung der Sättigungsmagnetisierung und der CURIE-Temperaturen und durch Auswertung von röntgendiffraktometrischen Messungen. Die aus Messungen der Sättigungsmagnetisierung erhaltenen Werte wurden nach verschiedenen kinetischen Gleichungen ausgewertet und daraus die Aktivierungsenergie der Reaktion berechnet. Eine kurze thermodynamische Betrachtung schließt sich an.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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