18496-40-7
Platinum (II) nitrate
CAS: 18496-40-7
Molecular Formula: N4O12Pt
18496-40-7 - Names and Identifiers
| Name | Platinum (II) nitrate |
| Synonyms | Platinum nitrate Einecs 242-383-9 Platinous nitrate Platinum dinitrate Platinum(II) nitrate Platinum (II) nitrate platinum(2+) dinitrate Platinum (II) nitrate - solution Bisnitric acid platinum(II) salt |
| CAS | 18496-40-7 |
| EINECS | 242-383-9 |
| InChI | InChI=1/2NO3.Pt/c2*2-1(3)4;/q2*-1;+2 |
18496-40-7 - Physico-chemical Properties
| Molecular Formula | N4O12Pt |
| Molar Mass | 319.09 |
| Boling Point | 83°C at 760 mmHg |
| Vapor Presure | 49.8mmHg at 25°C |
18496-40-7 - Reference Information
| Application | Platinum nitrate is mainly used for the preparation of palladium-containing compounds, heterogeneous catalysts and surface coatings of materials, it has a good market prospect. Platinum nitrate solution is one of the essential raw materials for purifying automobile motorcycle exhaust catalyst. As the country pays more and more attention to environmental protection, the noble metal compound industry used in the exhaust catalyst industry has broad prospects, platinum nitrate solution is also an important intermediate for the preparation of other homogeneous catalysts, and is an indispensable catalyst raw material for petrochemical and fine chemical industries. |
| preparation method | Platinum nitrate was prepared by the following steps: (1) reaction of sponge platinum with aqua regia, chloroplatinic acid solution was prepared. Adding aqua regia to the sponge platinum in batches and heating appropriately, the reaction process is based on the principle of uniform bubbling. When the reaction is stopped, add concentrated hydrochloric acid Dropwise to the reaction solution of sponge platinum and Aqua Regia until the reaction solution is free of Brown nitroxide overflow, and then add water to the reaction solution for acid removal, the filtrate was filtered, and the filtrate was heated to a mass-volume concentration of 100g/L to obtain a chloroplatinic acid solution. (2) the chloroplatinic acid solution prepared in step (1) is reacted with the oxalic acid solution to prepare a chloroplatinic acid solution. The amount of the platinum chlorate solution and the oxalic acid solution is based on the addition of 0.64 grams of oxalic acid per gram of platinum. The reaction temperature of the chloroplatinic acid solution and the oxalic acid solution is 50 ℃, and the oxalic acid solution with a concentration of 10% is added dropwise to the platinum chlorate solution, and the reaction solution is stirred while dropping; after completion of the dropwise addition, the reaction solution was continued to be stirred for 1 hour; The reaction solution was heated to reduce the volume by half to obtain a chloroplatinic acid solution. (3) using step (2) The chloroplatinic acid solution thus obtained is reacted with a sodium hydroxide solution to prepare a platinum-containing precipitate. The amount of the platinum chloroformate solution and the sodium hydroxide solution is based on the addition of 1.5 grams of sodium hydroxide per gram of platinum. The reaction between chloroplatinic acid solution and sodium hydroxide solution was carried out at 70 ° C., and 40% sodium hydroxide solution was added dropwise to the chloroplatinic acid solution, the reaction solution was stirred while adding Dropwise, and a black precipitate appeared in the reaction solution. After adding Dropwise, the reaction was continued for 2 hours, the precipitate obtained was washed with deionized water until chloride ions were not contained in the washing solution, and the precipitate obtained was a platinum-containing precipitate. (4) the platinum-containing precipitate obtained in step (3) is reacted with concentrated nitric acid to prepare platinum nitrate, wherein 10ml of concentrated nitric acid is added per gram of platinum. The reaction between the platinum-containing precipitate and the concentrated nitric acid is carried out at 70 ° C., and the concentrated nitric acid is added to the platinum-containing precipitate, and the reaction is carried out for 15 hours under stirring; the reaction solution was cooled and filtered to obtain a platinum nitrate solution. The Platinum nitrate solution was heated until a solid crystal film appeared, and then dried under vacuum at 50 ° C. To obtain a black Brown platinum nitrate. |
Last Update：2024-04-10 22:29:15
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