OXYGEN-ACCUMULATING MATERIAL WITH GREAT THERMAL STABILITY, PROCESS OF ITS PRODUCTION AND USE

An oxygen-storing material containing cerium(Ce)-oxide, and a stabiliser comprising Pr-, La-, Y- or Nd-oxide, in highly dispersed form on the surface of a high surface carrier. The storage material has a specific surface area of ≥ 20 (preferably ≥ 30) m /g after calcining in air at 900 degrees C for...

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Bibliographische Detailangaben
Hauptverfasser:	MUSSMANN LOTHAR DR, KREUZER THOMAS DR, LOX EGBERT DR, LINDNER DIETER DR, VAN YPEREN RENEE DR
Format:	Patent
Sprache:	cze ; eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS COMPOUNDS THEREOF CONCRETE INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRACTORIES SEPARATION SLAG THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	An oxygen-storing material containing cerium(Ce)-oxide, and a stabiliser comprising Pr-, La-, Y- or Nd-oxide, in highly dispersed form on the surface of a high surface carrier. The storage material has a specific surface area of ≥ 20 (preferably ≥ 30) m /g after calcining in air at 900 degrees C for 10 hours. Production of the material is also claimed by adding dissolved precursors of the stabiliser and Ce-oxide to a prepared aqueous dispersion of carrier whilst stirring, and precipitating the material by slowly raising the pH of the dispersion to 8-10 by adding a base to the carrier.