Method for the preparation of an aqueous colloidal dispersion of a cerium IV compound and the dispersion thus prepared

Process for the preparation of a colloidal dispersion of a cerium(IV) compound in aqueous medium. This process consists in digesting a cerium(IV) hydrate with an acid which has a pka of between 2.5 and 5.0, separating the compound obtained and dispersing it in water. The dispersions obtained have a...

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Bibliographische Detailangaben
Hauptverfasser:	ZERROUK, ROBERT, PICARD, FRANCOISE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS INORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Process for the preparation of a colloidal dispersion of a cerium(IV) compound in aqueous medium. This process consists in digesting a cerium(IV) hydrate with an acid which has a pka of between 2.5 and 5.0, separating the compound obtained and dispersing it in water. The dispersions obtained have a pH of between 1.5 and 5.