| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to synthesis of platinum metal salts, particularly palladium salts and specifically palladium propionate. The method of producing palladium propionate involves dissolving palladium metal in concentrated nitric acid, evaporation of the obtained solution, wherein after evaporation and before crystallisation of the palladium (II) nitrate salt at solution temperature (15-80)C, the palladium nitrate is treated with NO taken in amount of (0.3-0.7) m3 (standard conditions) per 1 kg of the initial palladium metal and propionic acid is added in amount of (2.0-3.0) l per 1 kg of the initial palladium metal or propionic acid anhydride in amount of (2.0-2.5) l per 1 kg of palladium. The formed solution or suspension heated in an inert gas atmosphere in amount of approximately 20 m3 (standard conditions) per 1 m3, at temperature (90-120)C for (30-60) minutes if propionic acid is added, or at temperature (80-110)C for not less than 30 minutes if propionic acid anhydride is added, and the obtained solution or suspension is cooled to temperature not higher than 20C, with crystallisation of the product for not less than 6 hours. ^ EFFECT: stable method of producing palladium propionate and extraction with high output in monophase state. ^ 2 cl, 41 ex, 2 tbl |
