Praseodymium Sulfate Hydrate CAS 10277-44-8
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- Appearance: Green powder
- Purity: 99. 0%min
- Stock: In stock
- Sample: Available
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Praseodymium Sulfate Hydrate: The Complete Guide
Praseodymium Sulfate Hydrate for Sale
|Chemical Name:||Praseodymium Sulfate Hydrate|
|Other Name:||Praseodymium sulfate; Praseodymium(III) sulfate hydrate|
What is Praseodymium Sulfate Hydrate?
Praseodymium (Pr) material is one of the products of light rare earth metals. Because of its unique physical and chemical properties, its applications in the fields of rare earth permanent magnets, hydrogen storage materials, non-ferrous metals and alloys, pyrophoric alloys, steel and iron continue to develop, and its prospects are very promising. In the mid-1950s, my country began to develop metal praseodymium. In the 1960s, the metal gradually moved towards industrial production and provided a small amount of products to the market. In the 1970s, the main technology for producing metal praseodymium was the electrolysis of praseodymium chloride molten salt, which was used by some domestic smelters, and the output increased rapidly, which could meet the needs of the market and users.
The chemical formula of praseodymium sulfate is Pr2(SO4)3. Molecular weight 570.00. Light green powder. Color varies with purity. The relative density is 3.7216. Dissolved in water. Its octahydrate is a green monoclinic crystal with a relative density of 2.82718.5 and a refractive index of 1.540, 1.549, and 1.561. It is soluble in water, slightly soluble in hot water, and becomes anhydrous salt when heated. Pentahydrate is a green monoclinic crystal with a relative density of 3.17616, soluble in water.
Praseodymium sulfate is an inorganic compound, which is an odorless bright green crystal. It readily absorbs water, forming pentahydrates and octahydrates. It is composed of praseodymium trioxide dissolved in sulfuric acid, from which praseodymium sulfate octahydrate can be crystallized. The product can be purified by “evaporation-redissolution” in an organic solvent. Praseodymium sulfate is stable under standard conditions. Hydrate loses water when heated and becomes slightly white. Like other rare earth metal sulfates, their solubility decreases with increasing temperature, allowing the separation of rare earth and non-rare earth compounds.
Praseodymium Sulfate Hydrate Uses
- Scientific research reagents, biochemical study.
- Praseodymium sulfate can be made use of to make colored glass, chromium-free passivation option and also some drivers.
- Praseodymium trioxide is soluble in sulfuric acid, and praseodymium sulfate octahydrate can be crystallized from the solution. The product can be purified by “evaporation-redissolution” in an organic solvent.
- Praseodymium sulfate is stable under standard conditions. Hydrate loses water when heated and becomes slightly white. Like other rare earth metal sulfates, their solubility decreases with increasing temperature, allowing the separation of rare earth and non-rare earth compounds.
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Application of Praseodymium Sulfate Hydrate
Praseodymium sulfate can be used to make colored glass, chromium-free passivation solution and some catalysts. Application examples are as follows:
The composition of the passivation solution is: cerium chloride 6-8g/L, lanthanum nitrate 1-3g/L, praseodymium sulfate 2-4g/L, potassium permanganate 8-10g/L, ferrous chloride 12-14g /L, potassium ferrate 3-5g/L, calcium nitrate 1.5-2.5g/L, sodium citrate 6-8g/L, water-based polyurethane 60-66g/L, m-xylylenediamine 6-8g/L, times Nitrotrimethylene triphosphonic acid 7-9g/L, sodium dodecylbenzenesulfonate 1-3g/L, and the balance is deionized water.
The passivation solution is specially designed for the characteristics of aluminum alloys used in aviation. It is chromium-free and fluorine-free, and is environmentally friendly. The addition of complex rare earth salts improves the corrosion resistance of the passivation film, and the passivation solution is stabilized by adding potassium ferrate. Waterborne polyurethane and nitrilotrimethylenetriphosphonic acid improve film formation. Therefore, the corrosion resistance of the passivation film prepared by the passivation solution of the present invention is good.
The catalyst is composed of magnesium-calcium-aluminum composite oxide and praseodymium sulfate, and the molar ratio of each component in terms of metal elements is: Mg/Al is 1:1~3:1, Mg/Ca is 5:1~20 :1, Mg/Pr is 10:1~40:1. The preparation method is as follows: preparing magnesium-calcium-aluminum composite oxide by co-precipitation method, spraying and immersing the magnesium-calcium-aluminum composite oxide with praseodymium sulfate solution, drying and roasting to obtain a finished catalyst. When the catalyst improves the selectivity of the target product isophorone, the yield of the product isophorone is improved.
The method comprises the following steps, 1) glass fiber pretreatment; 2) nickel chloride, cobalt chloride, praseodymium sulfate, sodium borohydride, sodium potassium tartrate, sodium metabisulfite and ethylenediamine are dissolved in distilled water respectively; 3) step 2 ) in the fully dissolved nickel chloride, cobalt chloride, praseodymium sulfate, sodium metabisulfite and ethylenediamine solution mixed evenly, then added to the sodium potassium tartrate solution, stirred evenly; 4) sodium borohydride solution was slowly added to step (2 ) the prepared solution, dilute, and adjust the pH value to 11 to 14 with sodium hydroxide; 5) join the glass fiber after pretreatment in step 1) to the plating solution prepared in step 3) to perform electroless tin-nickel plating , the plating temperature is 55-90° C.; 6) drying the Ni-Co-Pr-B glass fiber prepared in step 5).
The Ni-Co-Pr-B glass fiber coating prepared by adopting the technical scheme has high nickel content, good coating binding force, good conductivity and stability.
- Praseodymium(III) sulfate – WikiPedia
- Shi Ming. A chromium-free passivation solution for aluminum alloys used in aviation. CN201310310214.4, application date 20130722
Praseodymium Sulfate Hydrate Supplier and Manufacturer
As a praseodymium sulfate supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best praseodymium sulfate raw materials to customers all over the world.
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