| 摘要 |
<p>1533485 Regeneration of palladium catalysts HOECHST AG 25 March 1976 [25 March 1975] 12138/76 Heading B1E [Also in Division C2] A process for regenerating a supported palladium catalyst which does not contain gold, ruthenium, osmium, rhodium, iridium or platinum comprises treating with a liquid monocarboxylic acid and with further regeneration reagent, and subsequently adjusting the acid content to 8% wt. or less (based on total weight of catalyst and acid) by evaporation at 90‹C or below, the further reagent comprising an oxide of nitrogen other than nitrous oxide, nitric acid, a peroxide or a peracid. Treatment of palladium on silicic acid catalyst with nitric/acetic acid, acetic acid/nitric oxides, nitric/butyric acid and acetic acid/hydrogen peroxide is exemplified.</p> |
