METHOD FOR PRODUCING CHROMIUM (III) OXIDE

METHOD FOR PRODUCING CHROMIUM (III) OXIDE

Process for preparing chromium(III) oxide, comprising the steps of: a) Decomposing an alkali metal ammonium chromate double salt at a temperature of 200 to 650° C., especially of 250 to 550° C., b) washing the decomposition product obtained after a) and c) calcining the product obtained after b) at...

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Bibliographische Detailangaben
Hauptverfasser: FRIEDRICH HOLGER, ORTMANN RAINER, STENGER MATTHIAS, VAN ROOYEN DANIEL, KALIDEEN NAVEEN, BOLL MATTHIAS
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
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Beschreibung
Zusammenfassung:Process for preparing chromium(III) oxide, comprising the steps of: a) Decomposing an alkali metal ammonium chromate double salt at a temperature of 200 to 650° C., especially of 250 to 550° C., b) washing the decomposition product obtained after a) and c) calcining the product obtained after b) at a temperature of 700 to 1400° C., especially of 800 to 1300° C.