Equilibrium Clusters of Metal Oxides
Identifieur interne : 000474 ( Istex/Curation ); précédent : 000473; suivant : 000475Equilibrium Clusters of Metal Oxides
Auteurs : Willem K. Kegel [Pays-Bas]Source :
- The Journal of Physical Chemistry A [ 1089-5639 ] ; 2004.
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.
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DOI: 10.1021/jp0371229
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Equilibrium Clusters of Metal Oxides</title><author><name sortKey="Kegel, Willem K" sort="Kegel, Willem K" uniqKey="Kegel W" first="Willem K." last="Kegel">Willem K. Kegel</name><affiliation wicri:level="1"><mods:affiliation>Van't Hoff Laboratory for Physical and Colloid Chemistry, Debye Research Institute, Utrecht University,Padualaan 8, 3584 CH Utrecht, The Netherlands</mods:affiliation><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Van't Hoff Laboratory for Physical and Colloid Chemistry, Debye Research Institute, Utrecht University,Padualaan 8, 3584 CH Utrecht</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation> Corresponding author. E-mail: w.k.kegel@chem.uu.nl.</mods:affiliation><country wicri:rule="url">Pays-Bas</country></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:D56E1C63D796E55057C9117C143C8C754C4F35F7</idno><date when="2004" year="2004">2004</date><idno type="doi">10.1021/jp0371229</idno><idno type="url">https://api.istex.fr/ark:/67375/TPS-WQZVH53P-1/fulltext.pdf</idno><idno type="wicri:Area/Istex/Corpus">000474</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000474</idno><idno type="wicri:Area/Istex/Curation">000474</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main">Equilibrium Clusters of Metal Oxides</title><author><name sortKey="Kegel, Willem K" sort="Kegel, Willem K" uniqKey="Kegel W" first="Willem K." last="Kegel">Willem K. Kegel</name><affiliation wicri:level="1"><mods:affiliation>Van't Hoff Laboratory for Physical and Colloid Chemistry, Debye Research Institute, Utrecht University,Padualaan 8, 3584 CH Utrecht, The Netherlands</mods:affiliation><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Van't Hoff Laboratory for Physical and Colloid Chemistry, Debye Research Institute, Utrecht University,Padualaan 8, 3584 CH Utrecht</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation> Corresponding author. E-mail: w.k.kegel@chem.uu.nl.</mods:affiliation><country wicri:rule="url">Pays-Bas</country></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">The Journal of Physical Chemistry A</title><title level="j" type="abbrev">J. Phys. Chem. A</title><idno type="ISSN">1089-5639</idno><idno type="eISSN">1520-5215</idno><imprint><publisher>American Chemical Society</publisher><date type="e-published">2004</date><date type="published">2004</date><biblScope unit="vol">108</biblScope><biblScope unit="issue">11</biblScope><biblScope unit="page" from="1919">1919</biblScope><biblScope unit="page" to="1922">1922</biblScope></imprint><idno type="ISSN">1089-5639</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1089-5639</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="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.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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