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Equilibrium Clusters of Metal Oxides

Identifieur interne : 000474 ( Istex/Corpus ); précédent : 000473; suivant : 000475

Equilibrium Clusters of Metal Oxides

Auteurs : Willem K. Kegel

Source :

RBID : ISTEX:D56E1C63D796E55057C9117C143C8C754C4F35F7

Abstract

A simple toy model is analyzed within the framework of multichemical equilibrium to explain the spontaneous formation of clusters of certain metal oxides (termed “polyoxometalates” in the literature) in acidified aqueous solutions. Remarkably, thermodynamically stable clusters do not always correspond to magic numbers, i.e., local minima of the (bonding) free energy as a function of size. It is shown that cluster formation in metal oxides closely resembles micelle formation in surfactant systems.

Url:
DOI: 10.1021/jp0371229

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ISTEX:D56E1C63D796E55057C9117C143C8C754C4F35F7

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