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Mat No.10001005 Rare Earth Oxides Praseodymium Oxide O3Pr2 CAS No.12037-29-5 Purity≥99.99% Black Powder
| Synonyms | PRASEODIMIUM OXIDE ; PRASEODYMIUM(III,IV) OXIDE, 99.999% ; PRASEODYMIUM(III, IV) OXIDE, NANOPOWDER, <100NM (BET), 99% ; PRASEODYMIUM(III,IV) OXIDE, 99.9% ; PraseodymiumOxideGr99.9% ; Praseodymium (III,IV) oxide, 99.90% ; praseodymiumoxide(pr6o11) ; praseodymiumundecaoxide |
| CAS No. | 12037-29-5 |
| Molecular formula | O3Pr2 |
| Molecular weight | 329.81 |
| EINECS number | 234-857-9 |
| Melting point | 2500°C |
| Density | 6.5 g/mL at 25 °C(lit.) |
| Storage conditions | Inert atmosphere,2-8°C |
| form | powder |
| color | Black |
| Water solubility | insoluble |
| Sensitivity | Hygroscopic |
| Chemical nature |
Black powder. Insoluble in water, soluble in acid to generate corresponding III-valent salts. Depending on the preparation method, praseodymium dioxide begins to decompose at 320 or 360°C and release oxygen. |
| Use |
Used as raw material for ceramic glaze, praseodymium yellow pigment and rare earth permanent magnet alloy (Dark brown powder, insoluble in water and soluble in mineral acids). It can be used for the solid-state synthesis of a new type of ternary reduced molybdenum oxide Pr4Mo9O18, which contains previously unknown clusters of Mo7, Mo13 and Mo19 |
| Application | Praseodymium oxide is used in architectural ceramics and daily-use ceramics. It is mixed with ceramic glaze to make colored glaze, or it can be used as underglaze pigment alone. The made pigment is light yellow with pure and elegant tone; it is used to make permanent magnets. Using cheap neodymium praseodymium metal instead of pure neodymium metal to make permanent magnet materials, its oxygen resistance and mechanical properties are obviously improved, and it can be processed into magnets of various shapes. It is widely used in various electronic devices and motors; praseodymium oxide is used in the catalytic cracking of petroleum. In the form of praseodymium and neodymium enrichment, it is added to Y-type zeolite molecular sieve to prepare petroleum cracking catalyst, which can improve the activity, selectivity and stability of the catalyst; it is used for abrasive polishing; in addition, it is also used in the field of optical fiber. The reagent is used for the solid-state synthesis of a new type of ternary reduced molybdenum oxide Pr4Mo9O18, whose structure contains clusters of Mo7, Mo13 and Mo19 unknown in the past. The new cluster product is a small band gap semiconductor. |
| production method | Extraction method Monazite concentrate is alkali-dissolved, dephosphorized, and leached with dilute hydrochloric acid to obtain a rare earth chloride solution, which is extracted with the P2O4-kerosene-HCl-ReCl system. The rare earth mixture can be divided into three groups of light, medium and heavy rare earths. The raffinate La-Nd group of light rare earths (containing medium rare earth Sm2O3<1%), according to the oxalate precipitation order: samarium, neodymium, praseodymium, cerium, lanthanum, are separated. The oxalate can be precipitated to form a soluble complex and then precipitated to separate it, dried and burned at 1000°C to obtain praseodymium oxide. Its 3Pr2(C2O4)3→Pr6O11+7CO2+11CO |
| Dangerous Goods Sign | Xi |
| Hazard category code | 36/37/38 |
| safety instructions | 26-37/39 |
| WGK Germany | 1 |
| RTECS number | TU1480000 |
| TSCA | Yes |
| HS code | 28469017 |
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