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  • Inorganic Chemistry  (1)
  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Two methods have been developed in order to determine the water sorbed to a solid adsorbent out of an aqueous solution. The sorption of water to γ-Al2O3 out of pure water corresponds approximately to a two-molecular layer of H2O on the surface. Up to three times as much water is sorbed out of a weak solution of electrolytes. With higher concentrations of electrolytes, the water sorption decreases linearly with increasing ion adsorption, so far as cations and anions are bound in approximately equivalent amounts. Cations additionally bound because of exchange with Al3+-ions do not influence the water sorption.
    Notes: Es wurden zwei Methoden entwickelt, um das aus einer wäßrigen Lösung an einem festen Adsorbens „sorbierte“ Wasser zu bestimmen. Die „Wassersorption“ an γ-Al2O3 aus reinem Wasser entspricht etwa einer Bedeckung der Oberfläche mit zwei Moleküllagen H2O. Aus verdünnten Elektrolytlösungen wird bis zur dreifachen Menge H2O sorbiert. Bei höherer Elektrolytkonzentration nimmt die Wassersorption linear mit zunehmender Ionenadsorption wieder ab, soweit Kationen und Anionen in annähernd äquivalenter Menge gebunden werden. Zusätzlich durch Austausch gegen Al3+-Ionen gebundene Kationen sind ohne Einfluß auf die Wassersorption.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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