FIELD: hydrogenation catalysts. SUBSTANCE: platinum/rhenium catalyst on alumina carrier is burned together with sodium hydroxide at 900-950 C in reductive medium which is provided by carbon-containing agent, e.g activated carbon. Cake is dissolved in dilute sulfuric acid at elevated temperature for 1.5-2 h. Platinum and rhenium are concentrated in slurry separated from cake solution. EFFECT: achieved virtually complete summary separation of platinum and rhenium. 5 cl
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