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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 19 (1968), S. 393-405 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Contribution to the thermodynamics of the system Mn/aqueous solution in the absence and presence of dissolved oxygenUsing the thermodynamical criterion of the priority of certain reactions within a given system of possible reactions the authors consider the stability ranges of the different possible oxidation products of Mn in aqueous solutions. According to this study there is a limit at pH 8.5: below that value Mn2+-ions predominate, while above that value Mn(OH)2 is the predominating substance. Under the influence of the oxygen dissolved in the water these primary oxidation products are transformed into products of increasing insolubility, the formation priorities of these products being different in alkaline and in acid media.
    Notes: Unter Verwendung des thermodynamischen Kriteriums für die Priorität bestimmter Reaktionen innerhalb eines Systems möglicher Reaktionen werden die Stabilitätsbereiche der verschiedenen möglichen Oxydationsprodukte des Mangans in wäßrigen Lösungen betrachtet. Danach bildet der pi1 8,5 die Grenze: unterhalb dieses Wertes dominieren die Mn2+-Ionen, darüber Mn(OH)2. Unter dem Einfluß des im Wasser gelösten Sauerstoffs gehen diese primären Oxydationsprodukte in zunehmend unlösliche Produkte über, wobei deren Bildungsprioritäten im alkalischen und im sauren Gebiet verschieden sind.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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